25400127664 has 10 divisors (see below), whose sum is σ = 49212747380. Its totient is φ = 12700063824.

The previous prime is 25400127653. The next prime is 25400127673. The reversal of 25400127664 is 46672100452.

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, 793753974 + ... + 793754005.

It is an arithmetic number, because the mean of its divisors is an integer number (4921274738).

Almost surely, 2^25400127664 is an apocalyptic number.

It is an amenable number.

25400127664 is a deficient number, since it is larger than the sum of its proper divisors (23812619716).

25400127664 is a wasteful number, since it uses less digits than its factorization.

25400127664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587507987 (or 1587507981 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 25400127664 in words is "twenty-five billion, four hundred million, one hundred twenty-seven thousand, six hundred sixty-four".