265164012625 has 8 divisors (see below), whose sum is σ = 330924687912. Its totient is φ = 212131210000.

The previous prime is 265164012623. The next prime is 265164012629. The reversal of 265164012625 is 526210461562.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 401281024 + 264762731601 = 20032^2 + 514551^2 .

It is not a de Polignac number, because 265164012625 - 2¹ = 265164012623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265164012623) 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, 1060655926 + ... + 1060656175.

It is an arithmetic number, because the mean of its divisors is an integer number (41365585989).

Almost surely, 2^265164012625 is an apocalyptic number.

265164012625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

265164012625 is a deficient number, since it is larger than the sum of its proper divisors (65760675287).

265164012625 is an equidigital number, since it uses as much as digits as its factorization.

265164012625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121312116 (or 2121312106 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 265164012625 in words is "two hundred sixty-five billion, one hundred sixty-four million, twelve thousand, six hundred twenty-five".