25524513252 has 144 divisors (see below), whose sum is σ = 78482057472. Its totient is φ = 6827950080.

The previous prime is 25524513251. The next prime is 25524513257. The reversal of 25524513252 is 25231542552.

25524513252 is a `hidden beast` number, since 2 + 5 + 524 + 51 + 32 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25524513251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 811377 + ... + 842247.

It is an arithmetic number, because the mean of its divisors is an integer number (545014288).

Almost surely, 2^25524513252 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 25524513252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39241028736).

25524513252 is an abundant number, since it is smaller than the sum of its proper divisors (52957544220).

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

25524513252 is a wasteful number, since it uses less digits than its factorization.

25524513252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31098 (or 31093 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The spelling of 25524513252 in words is "twenty-five billion, five hundred twenty-four million, five hundred thirteen thousand, two hundred fifty-two".