25440204452 has 24 divisors (see below), whose sum is σ = 48730990392. Its totient is φ = 11549145600.

The previous prime is 25440204443. The next prime is 25440204457.

25440204452 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 1657629796 + 23782574656 = 40714^2 + 154216^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (25440204457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4006949 + ... + 4013292.

It is an arithmetic number, because the mean of its divisors is an integer number (2030457933).

Almost surely, 2^25440204452 is an apocalyptic number.

It is an amenable number.

25440204452 is a deficient number, since it is larger than the sum of its proper divisors (23290785940).

25440204452 is a wasteful number, since it uses less digits than its factorization.

25440204452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8020319 (or 8020317 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 32.

The spelling of 25440204452 in words is "twenty-five billion, four hundred forty million, two hundred four thousand, four hundred fifty-two".