13901625 has 40 divisors (see below), whose sum is σ = 25935624. Its totient is φ = 7408800.

The previous prime is 13901623. The next prime is 13901633. The reversal of 13901625 is 52610931.

13901625 is a `hidden beast` number, since 1 + 39 + 0 + 1 + 625 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 219024 + 13682601 = 468^2 + 3699^2 .

It is not a de Polignac number, because 13901625 - 2¹ = 13901623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13901621) 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 39 ways as a sum of consecutive naturals, for example, 9439 + ... + 10811.

Almost surely, 2^13901625 is an apocalyptic number.

13901625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13901625 is a deficient number, since it is larger than the sum of its proper divisors (12033999).

13901625 is an equidigital number, since it uses as much as digits as its factorization.

13901625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 13901625 is about 3728.4882995659. The cubic root of 13901625 is about 240.4483805404.

The spelling of 13901625 in words is "thirteen million, nine hundred one thousand, six hundred twenty-five".