25247889534 has 64 divisors (see below), whose sum is σ = 58149964800. Its totient is φ = 7158777600.

The previous prime is 25247889517. The next prime is 25247889551. The reversal of 25247889534 is 43598874252.

It is an interprime number because it is at equal distance from previous prime (25247889517) and next prime (25247889551).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4349434 + ... + 4355234.

It is an arithmetic number, because the mean of its divisors is an integer number (908593200).

Almost surely, 2^25247889534 is an apocalyptic number.

25247889534 is an abundant number, since it is smaller than the sum of its proper divisors (32902075266).

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

25247889534 is a wasteful number, since it uses less digits than its factorization.

25247889534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6585.

The product of its digits is 19353600, while the sum is 57.

The spelling of 25247889534 in words is "twenty-five billion, two hundred forty-seven million, eight hundred eighty-nine thousand, five hundred thirty-four".