25481430608 has 20 divisors (see below), whose sum is σ = 49429851540. Its totient is φ = 12725339904.

The previous prime is 25481430599. The next prime is 25481430629. The reversal of 25481430608 is 80603418452.

It can be written as a sum of positive squares in 2 ways, for example, as 7912458304 + 17568972304 = 88952^2 + 132548^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 947285 + ... + 973812.

It is an arithmetic number, because the mean of its divisors is an integer number (2471492577).

Almost surely, 2^25481430608 is an apocalyptic number.

It is an amenable number.

25481430608 is a deficient number, since it is larger than the sum of its proper divisors (23948420932).

25481430608 is a wasteful number, since it uses less digits than its factorization.

25481430608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921934 (or 1921928 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 25481430608 in words is "twenty-five billion, four hundred eighty-one million, four hundred thirty thousand, six hundred eight".