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23001355025 = 5211591417649
BaseRepresentation
bin10101011010111111…
…001101001100010001
32012101000002220022222
4111122333031030101
5334101321330100
614322222510425
71442665202045
oct253277151421
965330086288
1023001355025
119833735520
12455b135415
132227444b5c
141182b62025
158e94cb485
hex55afcd311

23001355025 has 24 divisors (see below), whose sum is σ = 31641948000. Its totient is φ = 16444716800.

The previous prime is 23001354979. The next prime is 23001355109. The reversal of 23001355025 is 52055310032.

It is not a de Polignac number, because 23001355025 - 226 = 22934246161 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23001354985 and 23001355003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 692600 + ... + 725049.

It is an arithmetic number, because the mean of its divisors is an integer number (1318414500).

Almost surely, 223001355025 is an apocalyptic number.

23001355025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23001355025 is a deficient number, since it is larger than the sum of its proper divisors (8640592975).

23001355025 is a wasteful number, since it uses less digits than its factorization.

23001355025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417729 (or 1417724 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

Adding to 23001355025 its reverse (52055310032), we get a palindrome (75056665057).

The spelling of 23001355025 in words is "twenty-three billion, one million, three hundred fifty-five thousand, twenty-five".

Divisors: 1 5 11 25 55 59 275 295 649 1475 3245 16225 1417649 7088245 15594139 35441225 77970695 83641291 389853475 418206455 920054201 2091032275 4600271005 23001355025