14625721 has 8 divisors (see below), whose sum is σ = 16257024. Its totient is φ = 13044720.

The previous prime is 14625713. The next prime is 14625727. The reversal of 14625721 is 12752641.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 14625721 - 2³ = 14625713 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 14625721.

It is not an unprimeable number, because it can be changed into a prime (14625727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11961 + ... + 13126.

It is an arithmetic number, because the mean of its divisors is an integer number (2032128).

Almost surely, 2^14625721 is an apocalyptic number.

14625721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14625721 is a deficient number, since it is larger than the sum of its proper divisors (1631303).

14625721 is a wasteful number, since it uses less digits than its factorization.

14625721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25151.

The product of its digits is 3360, while the sum is 28.

The square root of 14625721 is about 3824.3589005218. The cubic root of 14625721 is about 244.5526809394.

Subtracting from 14625721 its reverse (12752641), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 14625721 in words is "fourteen million, six hundred twenty-five thousand, seven hundred twenty-one".