25217541732 has 24 divisors (see below), whose sum is σ = 59549859936. Its totient is φ = 8304571648.

The previous prime is 25217541689. The next prime is 25217541733. The reversal of 25217541732 is 23714571252.

It is a super-2 number, since 2×25217541732² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25217541733) 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, 12658413 + ... + 12660404.

It is an arithmetic number, because the mean of its divisors is an integer number (2481244164).

Almost surely, 2^25217541732 is an apocalyptic number.

It is an amenable number.

25217541732 is an abundant number, since it is smaller than the sum of its proper divisors (34332318204).

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

25217541732 is a wasteful number, since it uses less digits than its factorization.

25217541732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25318907 (or 25318905 counting only the distinct ones).

The product of its digits is 117600, while the sum is 39.

The spelling of 25217541732 in words is "twenty-five billion, two hundred seventeen million, five hundred forty-one thousand, seven hundred thirty-two".