13765525 has 6 divisors (see below), whose sum is σ = 17069282. Its totient is φ = 11012400.

The previous prime is 13765511. The next prime is 13765553. The reversal of 13765525 is 52556731.

It can be written as a sum of positive squares in 3 ways, for example, as 178929 + 13586596 = 423^2 + 3686^2 .

It is not a de Polignac number, because 13765525 - 2⁷ = 13765397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275286 + ... + 275335.

Almost surely, 2^13765525 is an apocalyptic number.

It is an amenable number.

13765525 is a deficient number, since it is larger than the sum of its proper divisors (3303757).

13765525 is an equidigital number, since it uses as much as digits as its factorization.

13765525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550631 (or 550626 counting only the distinct ones).

The product of its digits is 31500, while the sum is 34.

The square root of 13765525 is about 3710.1920435471. The cubic root of 13765525 is about 239.6611247493.

The spelling of 13765525 in words is "thirteen million, seven hundred sixty-five thousand, five hundred twenty-five".