265816025 has 12 divisors (see below), whose sum is σ = 329826732. Its totient is φ = 212514240.

The previous prime is 265816009. The next prime is 265816027. The reversal of 265816025 is 520618562.

It can be written as a sum of positive squares in 6 ways, for example, as 36626704 + 229189321 = 6052^2 + 15139^2 .

It is not a de Polignac number, because 265816025 - 2⁴ = 265816009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265816027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55007 + ... + 59643.

It is an arithmetic number, because the mean of its divisors is an integer number (27485561).

Almost surely, 2^265816025 is an apocalyptic number.

265816025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

265816025 is a deficient number, since it is larger than the sum of its proper divisors (64010707).

265816025 is a wasteful number, since it uses less digits than its factorization.

265816025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6940 (or 6935 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 265816025 is about 16303.8653392378. The cubic root of 265816025 is about 642.9744561331.

The spelling of 265816025 in words is "two hundred sixty-five million, eight hundred sixteen thousand, twenty-five".