25131006531625 has 64 divisors (see below), whose sum is σ = 32666149152000. Its totient is φ = 19279634035200.

The previous prime is 25131006531607. The next prime is 25131006531679. The reversal of 25131006531625 is 52613560013152.

It is a happy number.

It is not a de Polignac number, because 25131006531625 - 2⁵ = 25131006531593 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 344748181 + ... + 344821069.

It is an arithmetic number, because the mean of its divisors is an integer number (510408580500).

Almost surely, 2^{25131006531625} is an apocalyptic number.

25131006531625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25131006531625 is a deficient number, since it is larger than the sum of its proper divisors (7535142620375).

25131006531625 is a wasteful number, since it uses less digits than its factorization.

25131006531625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73579 (or 73569 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

Adding to 25131006531625 its reverse (52613560013152), we get a palindrome (77744566544777).

The spelling of 25131006531625 in words is "twenty-five trillion, one hundred thirty-one billion, six million, five hundred thirty-one thousand, six hundred twenty-five".