25542613400 has 48 divisors (see below), whose sum is σ = 59623293240. Its totient is φ = 10176320000.

The previous prime is 25542613379. The next prime is 25542613429. The reversal of 25542613400 is 431624552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204209 + ... + 304608.

Almost surely, 2^25542613400 is an apocalyptic number.

25542613400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25542613400 is an abundant number, since it is smaller than the sum of its proper divisors (34080679840).

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

25542613400 is a wasteful number, since it uses less digits than its factorization.

25542613400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509084 (or 509075 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 25542613400 in words is "twenty-five billion, five hundred forty-two million, six hundred thirteen thousand, four hundred".