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23155125 = 35378821
BaseRepresentation
bin101100001010…
…1000110110101
31121120101212020
41120111012311
521411431000
62144143353
7400546440
oct130250665
947511766
1023155125
1112085874
127907b59
134a49576
14310a657
152075ba0
hex16151b5

23155125 has 32 divisors (see below), whose sum is σ = 44039424. Its totient is φ = 10584000.

The previous prime is 23155123. The next prime is 23155127. The reversal of 23155125 is 52155132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23155123) and next prime (23155127).

It is not a de Polignac number, because 23155125 - 21 = 23155123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23155095 and 23155104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23155123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1786 + ... + 7035.

It is an arithmetic number, because the mean of its divisors is an integer number (1376232).

Almost surely, 223155125 is an apocalyptic number.

23155125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23155125 is a deficient number, since it is larger than the sum of its proper divisors (20884299).

23155125 is an equidigital number, since it uses as much as digits as its factorization.

23155125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8846 (or 8836 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 23155125 is about 4811.9772443352. The cubic root of 23155125 is about 285.0246208339.

The spelling of 23155125 in words is "twenty-three million, one hundred fifty-five thousand, one hundred twenty-five".

Divisors: 1 3 5 7 15 21 25 35 75 105 125 175 375 525 875 2625 8821 26463 44105 61747 132315 185241 220525 308735 661575 926205 1102625 1543675 3307875 4631025 7718375 23155125