25140502664 has 16 divisors (see below), whose sum is σ = 48141388800. Its totient is φ = 12302798992.

The previous prime is 25140502663. The next prime is 25140502687. The reversal of 25140502664 is 46620504152.

It is not an unprimeable number, because it can be changed into a prime (25140502663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33431144 + ... + 33431895.

It is an arithmetic number, because the mean of its divisors is an integer number (3008836800).

Almost surely, 2^25140502664 is an apocalyptic number.

It is an amenable number.

25140502664 is a deficient number, since it is larger than the sum of its proper divisors (23000886136).

25140502664 is a wasteful number, since it uses less digits than its factorization.

25140502664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66863092 (or 66863088 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 25140502664 in words is "twenty-five billion, one hundred forty million, five hundred two thousand, six hundred sixty-four".