23897495725 has 12 divisors (see below), whose sum is σ = 30118681780. Its totient is φ = 18804585600.

The previous prime is 23897495723. The next prime is 23897495749. The reversal of 23897495725 is 52759479832.

It can be written as a sum of positive squares in 6 ways, for example, as 2519839204 + 21377656521 = 50198^2 + 146211^2 .

It is not a de Polignac number, because 23897495725 - 2¹ = 23897495723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23897495723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7833720 + ... + 7836769.

Almost surely, 2^23897495725 is an apocalyptic number.

23897495725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23897495725 is a deficient number, since it is larger than the sum of its proper divisors (6221186055).

23897495725 is a wasteful number, since it uses less digits than its factorization.

23897495725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15670560 (or 15670555 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 61.

The spelling of 23897495725 in words is "twenty-three billion, eight hundred ninety-seven million, four hundred ninety-five thousand, seven hundred twenty-five".