25601128492 has 6 divisors (see below), whose sum is σ = 44801974868. Its totient is φ = 12800564244.

The previous prime is 25601128453. The next prime is 25601128507. The reversal of 25601128492 is 29482110652.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200141058 + ... + 3200141065.

Almost surely, 2^25601128492 is an apocalyptic number.

It is an amenable number.

25601128492 is a deficient number, since it is larger than the sum of its proper divisors (19200846376).

25601128492 is a wasteful number, since it uses less digits than its factorization.

25601128492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6400282127 (or 6400282125 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 25601128492 in words is "twenty-five billion, six hundred one million, one hundred twenty-eight thousand, four hundred ninety-two".