11640425 has 12 divisors (see below), whose sum is σ = 14494236. Its totient is φ = 9273600.

The previous prime is 11640403. The next prime is 11640457. The reversal of 11640425 is 52404611.

It can be written as a sum of positive squares in 6 ways, for example, as 243049 + 11397376 = 493^2 + 3376^2 .

It is not a de Polignac number, because 11640425 - 2¹⁶ = 11574889 is a prime.

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 11640425.

It is a congruent 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, 6197 + ... + 7853.

It is an arithmetic number, because the mean of its divisors is an integer number (1207853).

Almost surely, 2^11640425 is an apocalyptic number.

It is an amenable number.

11640425 is a deficient number, since it is larger than the sum of its proper divisors (2853811).

11640425 is a wasteful number, since it uses less digits than its factorization.

11640425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948 (or 1943 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 11640425 is about 3411.8067061309. The cubic root of 11640425 is about 226.6328945743.

The spelling of 11640425 in words is "eleven million, six hundred forty thousand, four hundred twenty-five".