23525728637 has 4 divisors (see below), whose sum is σ = 23574036576. Its totient is φ = 23477420700.

The previous prime is 23525728591. The next prime is 23525728651. The reversal of 23525728637 is 73682752532.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23525728637 - 2⁶ = 23525728573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23525722637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24153239 + ... + 24154212.

It is an arithmetic number, because the mean of its divisors is an integer number (5893509144).

Almost surely, 2^23525728637 is an apocalyptic number.

It is an amenable number.

23525728637 is a deficient number, since it is larger than the sum of its proper divisors (48307939).

23525728637 is an equidigital number, since it uses as much as digits as its factorization.

23525728637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48307938.

The product of its digits is 4233600, while the sum is 50.

The spelling of 23525728637 in words is "twenty-three billion, five hundred twenty-five million, seven hundred twenty-eight thousand, six hundred thirty-seven".