25254566532 has 120 divisors (see below), whose sum is σ = 71833060376. Its totient is φ = 7690401792.

The previous prime is 25254566521. The next prime is 25254566537. The reversal of 25254566532 is 23566545252.

25254566532 is a `hidden beast` number, since 2 + 5 + 2 + 54 + 5 + 66 + 532 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2702336256 + 22552230276 = 51984^2 + 150174^2 .

It is not an unprimeable number, because it can be changed into a prime (25254566537) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 377658 + ... + 439470.

Almost surely, 2^25254566532 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 25254566532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35916530188).

25254566532 is an abundant number, since it is smaller than the sum of its proper divisors (46578493844).

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

25254566532 is a wasteful number, since it uses less digits than its factorization.

25254566532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61939 (or 61928 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 45.

The spelling of 25254566532 in words is "twenty-five billion, two hundred fifty-four million, five hundred sixty-six thousand, five hundred thirty-two".