25705559922 has 32 divisors (see below), whose sum is σ = 60781622400. Its totient is φ = 7091188608.

The previous prime is 25705559911. The next prime is 25705559923. The reversal of 25705559922 is 22995550752.

It is not an unprimeable number, because it can be changed into a prime (25705559923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10551147 + ... + 10553582.

It is an arithmetic number, because the mean of its divisors is an integer number (1899425700).

Almost surely, 2^25705559922 is an apocalyptic number.

25705559922 is an abundant number, since it is smaller than the sum of its proper divisors (35076062478).

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

25705559922 is a wasteful number, since it uses less digits than its factorization.

25705559922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21104770.

The product of its (nonzero) digits is 2835000, while the sum is 51.

The spelling of 25705559922 in words is "twenty-five billion, seven hundred five million, five hundred fifty-nine thousand, nine hundred twenty-two".