25631034740 has 48 divisors (see below), whose sum is σ = 54034942080. Its totient is φ = 10212531840.

The previous prime is 25631034739. The next prime is 25631034743. The reversal of 25631034740 is 4743013652.

It is a self number, because there is not a number n which added to its sum of digits gives 25631034740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25631034743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8055950 + ... + 8059130.

It is an arithmetic number, because the mean of its divisors is an integer number (1125727960).

Almost surely, 2^25631034740 is an apocalyptic number.

25631034740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25631034740 is an abundant number, since it is smaller than the sum of its proper divisors (28403907340).

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

25631034740 is a wasteful number, since it uses less digits than its factorization.

25631034740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4632 (or 4630 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The spelling of 25631034740 in words is "twenty-five billion, six hundred thirty-one million, thirty-four thousand, seven hundred forty".