25432645684 has 6 divisors (see below), whose sum is σ = 44507129954. Its totient is φ = 12716322840.

The previous prime is 25432645661. The next prime is 25432645691. The reversal of 25432645684 is 48654623452.

It can be written as a sum of positive squares in only one way, i.e., 22029090084 + 3403555600 = 148422^2 + 58340^2 .

It is a congruent 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, 3179080707 + ... + 3179080714.

Almost surely, 2^25432645684 is an apocalyptic number.

It is an amenable number.

25432645684 is a deficient number, since it is larger than the sum of its proper divisors (19074484270).

25432645684 is a wasteful number, since it uses less digits than its factorization.

25432645684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6358161425 (or 6358161423 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 49.

The spelling of 25432645684 in words is "twenty-five billion, four hundred thirty-two million, six hundred forty-five thousand, six hundred eighty-four".