11565025 has 12 divisors (see below), whose sum is σ = 14539372. Its totient is φ = 9123840.

The previous prime is 11565017. The next prime is 11565031. The reversal of 11565025 is 52056511.

11565025 = T₅₂₆ + T₅₂₇ + ... + T₅₉₈.

It can be written as a sum of positive squares in 6 ways, for example, as 389376 + 11175649 = 624^2 + 3343^2 .

It is not a de Polignac number, because 11565025 - 2³ = 11565017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1344 + ... + 4993.

Almost surely, 2^11565025 is an apocalyptic number.

It is an amenable number.

11565025 is a deficient number, since it is larger than the sum of its proper divisors (2974347).

11565025 is an equidigital number, since it uses as much as digits as its factorization.

11565025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6420 (or 6415 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 11565025 is about 3400.7388903002. The cubic root of 11565025 is about 226.1425015609.

The spelling of 11565025 in words is "eleven million, five hundred sixty-five thousand, twenty-five".