25191712992 has 24 divisors (see below), whose sum is σ = 66128246856. Its totient is φ = 8397237632.

The previous prime is 25191712963. The next prime is 25191712999. The reversal of 25191712992 is 29921719152.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25191712999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131206743 + ... + 131206934.

It is an arithmetic number, because the mean of its divisors is an integer number (2755343619).

Almost surely, 2^25191712992 is an apocalyptic number.

It is an amenable number.

25191712992 is an abundant number, since it is smaller than the sum of its proper divisors (40936533864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25191712992 is a wasteful number, since it uses less digits than its factorization.

25191712992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262413690 (or 262413682 counting only the distinct ones).

The product of its digits is 204120, while the sum is 48.

The spelling of 25191712992 in words is "twenty-five billion, one hundred ninety-one million, seven hundred twelve thousand, nine hundred ninety-two".