23991025 has 12 divisors (see below), whose sum is σ = 30194992. Its totient is φ = 18905040.

The previous prime is 23990969. The next prime is 23991041. The reversal of 23991025 is 52019932.

It is a de Polignac number, because none of the positive numbers 2^k-23991025 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5487 + ... + 8836.

Almost surely, 2^23991025 is an apocalyptic number.

23991025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23991025 is a deficient number, since it is larger than the sum of its proper divisors (6203967).

23991025 is a wasteful number, since it uses less digits than its factorization.

23991025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14400 (or 14395 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 23991025 is about 4898.0633928115. The cubic root of 23991025 is about 288.4139534955.

The spelling of 23991025 in words is "twenty-three million, nine hundred ninety-one thousand, twenty-five".