25481074836 has 48 divisors (see below), whose sum is σ = 70141460480. Its totient is φ = 7045457760.

The previous prime is 25481074831. The next prime is 25481074847. The reversal of 25481074836 is 63847018452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25481074831) 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, 4890076 + ... + 4895283.

Almost surely, 2^25481074836 is an apocalyptic number.

It is an amenable number.

25481074836 is an abundant number, since it is smaller than the sum of its proper divisors (44660385644).

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

25481074836 is a wasteful number, since it uses less digits than its factorization.

25481074836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9785404 (or 9785402 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 25481074836 in words is "twenty-five billion, four hundred eighty-one million, seventy-four thousand, eight hundred thirty-six".