16724925 has 108 divisors (see below), whose sum is σ = 36661716. Its totient is φ = 7257600.

The previous prime is 16724879. The next prime is 16724971. The reversal of 16724925 is 52942761.

16724925 = 21³ + 22³ + ... + 90³.

16724925 is a `hidden beast` number, since 167 + 2 + 492 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (16724879) and next prime (16724971).

It can be written as a sum of positive squares in 6 ways, for example, as 636804 + 16088121 = 798^2 + 4011^2 .

It is not a de Polignac number, because 16724925 - 2¹² = 16720829 is a prime.

Its product of digits (30240) is a multiple of the sum of its prime factors (108).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16724925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 407905 + ... + 407945.

Almost surely, 2^16724925 is an apocalyptic number.

16724925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16724925 is an abundant number, since it is smaller than the sum of its proper divisors (19936791).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16724925 is a wasteful number, since it uses less digits than its factorization.

16724925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 93 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 16724925 is about 4089.6118397716. The cubic root of 16724925 is about 255.7337574214.

The spelling of 16724925 in words is "sixteen million, seven hundred twenty-four thousand, nine hundred twenty-five".