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23970780625 = 541125632
BaseRepresentation
bin10110010100110001…
…010001010111010001
32021212120020211020211
4112110301101113101
5343043004440000
615002333004121
71506006162541
oct262461212721
967776224224
1023970780625
11a190976300
12478b923641
13235023877c
1412357d1321
1595466d7ba
hex594c515d1

23970780625 has 45 divisors (see below), whose sum is σ = 32983105309. Its totient is φ = 17402330000.

The previous prime is 23970780607. The next prime is 23970780629. The reversal of 23970780625 is 52608707932.

The square root of 23970780625 is 154825.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 1879309201 + 22091471424 = 43351^2 + 148632^2 .

It is not a de Polignac number, because 23970780625 - 25 = 23970780593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23970780629) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 42576594 + ... + 42577156.

Almost surely, 223970780625 is an apocalyptic number.

23970780625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23970780625 is the 154825-th square number.

23970780625 is the 77413-rd centered octagonal number.

It is an amenable number.

23970780625 is a deficient number, since it is larger than the sum of its proper divisors (9012324684).

23970780625 is an frugal number, since it uses more digits than its factorization.

23970780625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

Multiplying 23970780625 by its sum of digits (49), we get a square (1174568250625 = 10837752).

The spelling of 23970780625 in words is "twenty-three billion, nine hundred seventy million, seven hundred eighty thousand, six hundred twenty-five".

Divisors: 1 5 11 25 55 121 125 275 563 605 625 1375 2815 3025 6193 6875 14075 15125 30965 68123 70375 75625 154825 316969 340615 351875 774125 1584845 1703075 3486659 3870625 7924225 8515375 17433295 38353249 39621125 42576875 87166475 191766245 198105625 435832375 958831225 2179161875 4794156125 23970780625