23156425 has 12 divisors (see below), whose sum is σ = 28927836. Its totient is φ = 18387200.

The previous prime is 23156417. The next prime is 23156449. The reversal of 23156425 is 52465132.

It can be written as a sum of positive squares in 6 ways, for example, as 87616 + 23068809 = 296^2 + 4803^2 .

It is not a de Polignac number, because 23156425 - 2³ = 23156417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23156393 and 23156402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45 + ... + 6805.

It is an arithmetic number, because the mean of its divisors is an integer number (2410653).

Almost surely, 2^23156425 is an apocalyptic number.

23156425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23156425 is a deficient number, since it is larger than the sum of its proper divisors (5771411).

23156425 is a wasteful number, since it uses less digits than its factorization.

23156425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6908 (or 6903 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 23156425 is about 4812.1123220474. The cubic root of 23156425 is about 285.0299547873.

The spelling of 23156425 in words is "twenty-three million, one hundred fifty-six thousand, four hundred twenty-five".