265131384625 has 8 divisors (see below), whose sum is σ = 330883968168. Its totient is φ = 212105107600.

The previous prime is 265131384593. The next prime is 265131384629. The reversal of 265131384625 is 526483131562.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4688551729 + 260442832896 = 68473^2 + 510336^2 .

It is not a de Polignac number, because 265131384625 - 2⁵ = 265131384593 is a prime.

It is a super-2 number, since 2×265131384625² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265131384629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060525414 + ... + 1060525663.

It is an arithmetic number, because the mean of its divisors is an integer number (41360496021).

Almost surely, 2^265131384625 is an apocalyptic number.

265131384625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

265131384625 is a deficient number, since it is larger than the sum of its proper divisors (65752583543).

265131384625 is an equidigital number, since it uses as much as digits as its factorization.

265131384625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121051092 (or 2121051082 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 46.

The spelling of 265131384625 in words is "two hundred sixty-five billion, one hundred thirty-one million, three hundred eighty-four thousand, six hundred twenty-five".