17970725 has 12 divisors (see below), whose sum is σ = 22378404. Its totient is φ = 14315520.

The previous prime is 17970709. The next prime is 17970737. The reversal of 17970725 is 52707971.

It can be written as a sum of positive squares in 6 ways, for example, as 1705636 + 16265089 = 1306^2 + 4033^2 .

It is not a de Polignac number, because 17970725 - 2⁴ = 17970709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5027 + ... + 7823.

It is an arithmetic number, because the mean of its divisors is an integer number (1864867).

Almost surely, 2^17970725 is an apocalyptic number.

It is an amenable number.

17970725 is a deficient number, since it is larger than the sum of its proper divisors (4407679).

17970725 is a wasteful number, since it uses less digits than its factorization.

17970725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3064 (or 3059 counting only the distinct ones).

The product of its (nonzero) digits is 30870, while the sum is 38.

The square root of 17970725 is about 4239.1891913431. The cubic root of 17970725 is about 261.9319841703.

The spelling of 17970725 in words is "seventeen million, nine hundred seventy thousand, seven hundred twenty-five".