25717877632 has 16 divisors (see below), whose sum is σ = 51234834600. Its totient is φ = 12858938752.

The previous prime is 25717877621. The next prime is 25717877657. The reversal of 25717877632 is 23677871752.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×25717877632² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100460332 + ... + 100460587.

Almost surely, 2^25717877632 is an apocalyptic number.

It is an amenable number.

25717877632 is a deficient number, since it is larger than the sum of its proper divisors (25516956968).

25717877632 is an equidigital number, since it uses as much as digits as its factorization.

25717877632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200920933 (or 200920921 counting only the distinct ones).

The product of its digits is 6914880, while the sum is 55.

The spelling of 25717877632 in words is "twenty-five billion, seven hundred seventeen million, eight hundred seventy-seven thousand, six hundred thirty-two".