25345642692 has 24 divisors (see below), whose sum is σ = 59168894400. Its totient is φ = 8444395936.

The previous prime is 25345642681. The next prime is 25345642739. The reversal of 25345642692 is 29624654352.

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 7 ways as a sum of consecutive naturals, for example, 493467 + ... + 542402.

It is an arithmetic number, because the mean of its divisors is an integer number (2465370600).

Almost surely, 2^25345642692 is an apocalyptic number.

It is an amenable number.

25345642692 is an abundant number, since it is smaller than the sum of its proper divisors (33823251708).

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

25345642692 is a wasteful number, since it uses less digits than its factorization.

25345642692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037915 (or 1037913 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 48.

The spelling of 25345642692 in words is "twenty-five billion, three hundred forty-five million, six hundred forty-two thousand, six hundred ninety-two".