25697422842 has 64 divisors (see below), whose sum is σ = 66005452800. Its totient is φ = 6482672064.

The previous prime is 25697422837. The next prime is 25697422867. The reversal of 25697422842 is 24822479652.

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, 1010592 + ... + 1035707.

It is an arithmetic number, because the mean of its divisors is an integer number (1031335200).

Almost surely, 2^25697422842 is an apocalyptic number.

25697422842 is an abundant number, since it is smaller than the sum of its proper divisors (40308029958).

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

25697422842 is a wasteful number, since it uses less digits than its factorization.

25697422842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046347.

The product of its digits is 3870720, while the sum is 51.

The spelling of 25697422842 in words is "twenty-five billion, six hundred ninety-seven million, four hundred twenty-two thousand, eight hundred forty-two".