25671631000 has 32 divisors (see below), whose sum is σ = 60071618880. Its totient is φ = 10268652000.

The previous prime is 25671630989. The next prime is 25671631021. The reversal of 25671631000 is 13617652.

It is a super-2 number, since 2×25671631000² (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 in 7 ways as a sum of consecutive naturals, for example, 12834816 + ... + 12836815.

It is an arithmetic number, because the mean of its divisors is an integer number (1877238090).

Almost surely, 2^25671631000 is an apocalyptic number.

25671631000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25671631000 is an abundant number, since it is smaller than the sum of its proper divisors (34399987880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25671631000 is a wasteful number, since it uses less digits than its factorization.

25671631000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25671652 (or 25671638 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The spelling of 25671631000 in words is "twenty-five billion, six hundred seventy-one million, six hundred thirty-one thousand".