25005540424 has 8 divisors (see below), whose sum is σ = 46885388310. Its totient is φ = 12502770208.

The previous prime is 25005540347. The next prime is 25005540433. The reversal of 25005540424 is 42404550052.

It can be written as a sum of positive squares in only one way, i.e., 13098802500 + 11906737924 = 114450^2 + 109118^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562846269 + ... + 1562846284.

Almost surely, 2^25005540424 is an apocalyptic number.

It is an amenable number.

25005540424 is a deficient number, since it is larger than the sum of its proper divisors (21879847886).

25005540424 is a wasteful number, since it uses less digits than its factorization.

25005540424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125692559 (or 3125692555 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 31.

The spelling of 25005540424 in words is "twenty-five billion, five million, five hundred forty thousand, four hundred twenty-four".