265165225 has 18 divisors (see below), whose sum is σ = 356048826. Its totient is φ = 195811200.

The previous prime is 265165223. The next prime is 265165237. The reversal of 265165225 is 522561562.

It can be written as a sum of positive squares in 9 ways, for example, as 219899241 + 45265984 = 14829^2 + 6728^2 .

It is not a de Polignac number, because 265165225 - 2¹ = 265165223 is a prime.

It is a super-3 number, since 3×265165225³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265165223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 27156 + ... + 35605.

Almost surely, 2^265165225 is an apocalyptic number.

265165225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

265165225 is a deficient number, since it is larger than the sum of its proper divisors (90883601).

265165225 is a wasteful number, since it uses less digits than its factorization.

265165225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62797 (or 62779 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 265165225 is about 16283.8946508506. The cubic root of 265165225 is about 642.4492937419.

Adding to 265165225 its product of digits (36000), we get a square (265201225 = 16285²).

It can be divided in two parts, 2651 and 65225, that added together give a palindrome (67876).

The spelling of 265165225 in words is "two hundred sixty-five million, one hundred sixty-five thousand, two hundred twenty-five".