25259662842 has 16 divisors (see below), whose sum is σ = 50521145952. Its totient is φ = 8419584240.

The previous prime is 25259662819. The next prime is 25259662877. The reversal of 25259662842 is 24826695252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161868 + ... + 276984.

It is an arithmetic number, because the mean of its divisors is an integer number (3157571622).

Almost surely, 2^25259662842 is an apocalyptic number.

25259662842 is an abundant number, since it is smaller than the sum of its proper divisors (25261483110).

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

25259662842 is a wasteful number, since it uses less digits than its factorization.

25259662842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151693.

The product of its digits is 4147200, while the sum is 51.

The spelling of 25259662842 in words is "twenty-five billion, two hundred fifty-nine million, six hundred sixty-two thousand, eight hundred forty-two".