11525555 has 4 divisors (see below), whose sum is σ = 13830672. Its totient is φ = 9220440.

The previous prime is 11525543. The next prime is 11525561. The reversal of 11525555 is 55552511.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11525555 - 2⁶ = 11525491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152551 + ... + 1152560.

It is an arithmetic number, because the mean of its divisors is an integer number (3457668).

Almost surely, 2^11525555 is an apocalyptic number.

11525555 is a deficient number, since it is larger than the sum of its proper divisors (2305117).

11525555 is an equidigital number, since it uses as much as digits as its factorization.

11525555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305116.

The product of its digits is 6250, while the sum is 29.

The square root of 11525555 is about 3394.9307798540. The cubic root of 11525555 is about 225.8849428699.

The spelling of 11525555 in words is "eleven million, five hundred twenty-five thousand, five hundred fifty-five".