25215433451252 has 12 divisors (see below), whose sum is σ = 48138554770656. Its totient is φ = 11461560659640.

The previous prime is 25215433451251. The next prime is 25215433451261.

25215433451252 is nontrivially palindromic in base 10.

It is a super-4 number, since 4×25215433451252⁴ (a number of 55 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 573078032983 = 25215433451252 / (2 + 5 + 2 + 1 + 5 + 4 + 3 + 3 + 4 + 5 + 1 + 2 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25215433451251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286539016448 + ... + 286539016535.

It is an arithmetic number, because the mean of its divisors is an integer number (4011546230888).

Almost surely, 2^{25215433451252} is an apocalyptic number.

25215433451252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25215433451252 is a deficient number, since it is larger than the sum of its proper divisors (22923121319404).

25215433451252 is a wasteful number, since it uses less digits than its factorization.

25215433451252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573078032998 (or 573078032996 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 44.

It can be divided in two parts, 2521543 and 3451252, that added together give a palindrome (5972795).

The spelling of 25215433451252 in words is "twenty-five trillion, two hundred fifteen billion, four hundred thirty-three million, four hundred fifty-one thousand, two hundred fifty-two".