11525640 has 64 divisors (see below), whose sum is σ = 39519360. Its totient is φ = 2634240.

The previous prime is 11525639. The next prime is 11525641. The reversal of 11525640 is 4652511.

It is an interprime number because it is at equal distance from previous prime (11525639) and next prime (11525641).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 11525640.

It is not an unprimeable number, because it can be changed into a prime (11525641) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6021 + ... + 7700.

It is an arithmetic number, because the mean of its divisors is an integer number (617490).

Almost surely, 2^11525640 is an apocalyptic number.

11525640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11525640 is an abundant number, since it is smaller than the sum of its proper divisors (27993720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11525640 is a wasteful number, since it uses less digits than its factorization.

11525640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13742 (or 13738 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 11525640 is about 3394.9432984956. The cubic root of 11525640 is about 225.8854981626.

The spelling of 11525640 in words is "eleven million, five hundred twenty-five thousand, six hundred forty".