10638725 has 6 divisors (see below), whose sum is σ = 13192050. Its totient is φ = 8510960.

The previous prime is 10638713. The next prime is 10638751. The reversal of 10638725 is 52783601.

It is a happy number.

10638725 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2217121 + 8421604 = 1489^2 + 2902^2 .

It is not a de Polignac number, because 10638725 - 2⁴ = 10638709 is a prime.

It is a super-2 number, since 2×10638725² = 226364939251250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10638691 and 10638700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 212750 + ... + 212799.

It is an arithmetic number, because the mean of its divisors is an integer number (2198675).

Almost surely, 2^10638725 is an apocalyptic number.

It is an amenable number.

10638725 is a deficient number, since it is larger than the sum of its proper divisors (2553325).

10638725 is an equidigital number, since it uses as much as digits as its factorization.

10638725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425559 (or 425554 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 10638725 is about 3261.7058420403. The cubic root of 10638725 is about 219.9361040336.

The spelling of 10638725 in words is "ten million, six hundred thirty-eight thousand, seven hundred twenty-five".