32130925 has 6 divisors (see below), whose sum is σ = 39842378. Its totient is φ = 25704720.

The previous prime is 32130913. The next prime is 32130929. The reversal of 32130925 is 52903123.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5391684 + 26739241 = 2322^2 + 5171^2 .

It is not a de Polignac number, because 32130925 - 2⁵ = 32130893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1285237 = 32130925 / (3 + 2 + 1 + 3 + 0 + 9 + 2 + 5).

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 32130925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32130929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 642594 + ... + 642643.

Almost surely, 2^32130925 is an apocalyptic number.

It is an amenable number.

32130925 is a deficient number, since it is larger than the sum of its proper divisors (7711453).

32130925 is a wasteful number, since it uses less digits than its factorization.

32130925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285247 (or 1285242 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 32130925 is about 5668.4146813726. The cubic root of 32130925 is about 317.9126014053.

The spelling of 32130925 in words is "thirty-two million, one hundred thirty thousand, nine hundred twenty-five".