25016645432 has 8 divisors (see below), whose sum is σ = 46906210200. Its totient is φ = 12508322712.

The previous prime is 25016645411. The next prime is 25016645483. The reversal of 25016645432 is 23454661052.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1563540332 + ... + 1563540347.

It is an arithmetic number, because the mean of its divisors is an integer number (5863276275).

Almost surely, 2^25016645432 is an apocalyptic number.

It is an amenable number.

25016645432 is a deficient number, since it is larger than the sum of its proper divisors (21889564768).

25016645432 is a wasteful number, since it uses less digits than its factorization.

25016645432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127080685 (or 3127080681 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 25016645432 in words is "twenty-five billion, sixteen million, six hundred forty-five thousand, four hundred thirty-two".