25504635480 has 64 divisors (see below), whose sum is σ = 78380114400. Its totient is φ = 6635351040.

The previous prime is 25504635479. The next prime is 25504635491. The reversal of 25504635480 is 8453640552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2587015 + ... + 2596854.

Almost surely, 2^25504635480 is an apocalyptic number.

25504635480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25504635480 is an abundant number, since it is smaller than the sum of its proper divisors (52875478920).

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

25504635480 is a wasteful number, since it uses less digits than its factorization.

25504635480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5183924 (or 5183920 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 25504635480 in words is "twenty-five billion, five hundred four million, six hundred thirty-five thousand, four hundred eighty".