25525544532 has 96 divisors (see below), whose sum is σ = 63528192000. Its totient is φ = 7959422592.

The previous prime is 25525544507. The next prime is 25525544533. The reversal of 25525544532 is 23544552552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25525544533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3236578 + ... + 3244454.

It is an arithmetic number, because the mean of its divisors is an integer number (661752000).

Almost surely, 2^25525544532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25525544532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31764096000).

25525544532 is an abundant number, since it is smaller than the sum of its proper divisors (38002647468).

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

25525544532 is a wasteful number, since it uses less digits than its factorization.

25525544532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8165 (or 8163 counting only the distinct ones).

The product of its digits is 1200000, while the sum is 42.

The spelling of 25525544532 in words is "twenty-five billion, five hundred twenty-five million, five hundred forty-four thousand, five hundred thirty-two".