25502825625 has 40 divisors (see below), whose sum is σ = 42545431104. Its totient is φ = 13584120000.

The previous prime is 25502825611. The next prime is 25502825627. The reversal of 25502825625 is 52652820552.

It is not a de Polignac number, because 25502825625 - 2⁶ = 25502825561 is a prime.

It is a super-2 number, since 2×25502825625² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25502825627) 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 39 ways as a sum of consecutive naturals, for example, 1531092 + ... + 1547658.

Almost surely, 2^25502825625 is an apocalyptic number.

25502825625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25502825625 is a deficient number, since it is larger than the sum of its proper divisors (17042605479).

25502825625 is an equidigital number, since it uses as much as digits as its factorization.

25502825625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17411 (or 17396 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 42.

The spelling of 25502825625 in words is "twenty-five billion, five hundred two million, eight hundred twenty-five thousand, six hundred twenty-five".