23772665525 has 24 divisors (see below), whose sum is σ = 34163777664. Its totient is φ = 16071652800.

The previous prime is 23772665503. The next prime is 23772665533. The reversal of 23772665525 is 52556627732.

It is not a de Polignac number, because 23772665525 - 2¹⁴ = 23772649141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 944222 + ... + 969071.

It is an arithmetic number, because the mean of its divisors is an integer number (1423490736).

Almost surely, 2^23772665525 is an apocalyptic number.

23772665525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23772665525 is a deficient number, since it is larger than the sum of its proper divisors (10391112139).

23772665525 is a wasteful number, since it uses less digits than its factorization.

23772665525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913381 (or 1913376 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 50.

The spelling of 23772665525 in words is "twenty-three billion, seven hundred seventy-two million, six hundred sixty-five thousand, five hundred twenty-five".