23978725 has 6 divisors (see below), whose sum is σ = 29733650. Its totient is φ = 19182960.

The previous prime is 23978711. The next prime is 23978749. The reversal of 23978725 is 52787932.

It can be written as a sum of positive squares in 3 ways, for example, as 2439844 + 21538881 = 1562^2 + 4641^2 .

It is not a de Polignac number, because 23978725 - 2¹⁷ = 23847653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 479550 + ... + 479599.

Almost surely, 2^23978725 is an apocalyptic number.

23978725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23978725 is a deficient number, since it is larger than the sum of its proper divisors (5754925).

23978725 is an equidigital number, since it uses as much as digits as its factorization.

23978725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959159 (or 959154 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 23978725 is about 4896.8076335507. The cubic root of 23978725 is about 288.3646559206.

The spelling of 23978725 in words is "twenty-three million, nine hundred seventy-eight thousand, seven hundred twenty-five".