25991757132 has 24 divisors (see below), whose sum is σ = 66160836672. Its totient is φ = 7876290000.

The previous prime is 25991757107. The next prime is 25991757133. The reversal of 25991757132 is 23175719952.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25991757133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98453494 + ... + 98453757.

It is an arithmetic number, because the mean of its divisors is an integer number (2756701528).

Almost surely, 2^25991757132 is an apocalyptic number.

25991757132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25991757132 is an abundant number, since it is smaller than the sum of its proper divisors (40169079540).

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

25991757132 is a wasteful number, since it uses less digits than its factorization.

25991757132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196907269 (or 196907267 counting only the distinct ones).

The product of its digits is 1190700, while the sum is 51.

The spelling of 25991757132 in words is "twenty-five billion, nine hundred ninety-one million, seven hundred fifty-seven thousand, one hundred thirty-two".