25378939072 has 28 divisors (see below), whose sum is σ = 50366468736. Its totient is φ = 12688175360.

The previous prime is 25378939057. The next prime is 25378939093. The reversal of 25378939072 is 27093987352.

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, 1057122 + ... + 1080862.

Almost surely, 2^25378939072 is an apocalyptic number.

It is an amenable number.

25378939072 is a deficient number, since it is larger than the sum of its proper divisors (24987529664).

25378939072 is a wasteful number, since it uses less digits than its factorization.

25378939072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40456 (or 40446 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 25378939072 in words is "twenty-five billion, three hundred seventy-eight million, nine hundred thirty-nine thousand, seventy-two".