11639425 has 24 divisors (see below), whose sum is σ = 16623936. Its totient is φ = 7919040.

The previous prime is 11639417. The next prime is 11639429. The reversal of 11639425 is 52493611.

11639425 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11639425 - 2³ = 11639417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11639429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39579 + ... + 39871.

It is an arithmetic number, because the mean of its divisors is an integer number (692664).

Almost surely, 2^11639425 is an apocalyptic number.

It is an amenable number.

11639425 is a deficient number, since it is larger than the sum of its proper divisors (4984511).

11639425 is a wasteful number, since it uses less digits than its factorization.

11639425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 532 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 11639425 is about 3411.6601530633. The cubic root of 11639425 is about 226.6264045654.

The spelling of 11639425 in words is "eleven million, six hundred thirty-nine thousand, four hundred twenty-five".