11511925 has 6 divisors (see below), whose sum is σ = 14274818. Its totient is φ = 9209520.

The previous prime is 11511923. The next prime is 11511947. The reversal of 11511925 is 52911511.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1532644 + 9979281 = 1238^2 + 3159^2 .

It is not a de Polignac number, because 11511925 - 2¹ = 11511923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 460477 = 11511925 / (1 + 1 + 5 + 1 + 1 + 9 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11511925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11511923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 230214 + ... + 230263.

Almost surely, 2^11511925 is an apocalyptic number.

It is an amenable number.

11511925 is a deficient number, since it is larger than the sum of its proper divisors (2762893).

11511925 is an equidigital number, since it uses as much as digits as its factorization.

11511925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460487 (or 460482 counting only the distinct ones).

The product of its digits is 450, while the sum is 25.

The square root of 11511925 is about 3392.9227813200. The cubic root of 11511925 is about 225.7958646946.

The spelling of 11511925 in words is "eleven million, five hundred eleven thousand, nine hundred twenty-five".