25504440552 has 24 divisors (see below), whose sum is σ = 69074526690. Its totient is φ = 8501480160.

The previous prime is 25504440551. The next prime is 25504440557.

25504440552 is a `hidden beast` number, since 25 + 5 + 0 + 44 + 40 + 552 = 666.

25504440552 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 14211977796 + 11292462756 = 119214^2 + 106266^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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 (25504440551) 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 5 ways as a sum of consecutive naturals, for example, 177114099 + ... + 177114242.

Almost surely, 2^25504440552 is an apocalyptic number.

It is an amenable number.

25504440552 is an abundant number, since it is smaller than the sum of its proper divisors (43570086138).

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

25504440552 is a wasteful number, since it uses less digits than its factorization.

25504440552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354228353 (or 354228346 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 36.

The spelling of 25504440552 in words is "twenty-five billion, five hundred four million, four hundred forty thousand, five hundred fifty-two".