23161925 has 24 divisors (see below), whose sum is σ = 29998080. Its totient is φ = 17724800.

The previous prime is 23161891. The next prime is 23161927. The reversal of 23161925 is 52916132.

It is not a de Polignac number, because 23161925 - 2⁶ = 23161861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23161927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60284 + ... + 60666.

It is an arithmetic number, because the mean of its divisors is an integer number (1249920).

Almost surely, 2^23161925 is an apocalyptic number.

23161925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23161925 is a deficient number, since it is larger than the sum of its proper divisors (6836155).

23161925 is a wasteful number, since it uses less digits than its factorization.

23161925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 488 counting only the distinct ones).

The product of its digits is 3240, while the sum is 29.

The square root of 23161925 is about 4812.6837627253. The cubic root of 23161925 is about 285.0525193045.

The spelling of 23161925 in words is "twenty-three million, one hundred sixty-one thousand, nine hundred twenty-five".