25305970842 has 12 divisors (see below), whose sum is σ = 54829603530. Its totient is φ = 8435323608.

The previous prime is 25305970813. The next prime is 25305970889. The reversal of 25305970842 is 24807950352.

25305970842 is a `hidden beast` number, since 2 + 53 + 0 + 597 + 0 + 8 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15453224721 + 9852746121 = 124311^2 + 99261^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 702943617 + ... + 702943652.

Almost surely, 2^25305970842 is an apocalyptic number.

25305970842 is an abundant number, since it is smaller than the sum of its proper divisors (29523632688).

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

25305970842 is a wasteful number, since it uses less digits than its factorization.

25305970842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405887277 (or 1405887274 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 25305970842 in words is "twenty-five billion, three hundred five million, nine hundred seventy thousand, eight hundred forty-two".