20125316 has 6 divisors (see below), whose sum is σ = 35219310. Its totient is φ = 10062656.

The previous prime is 20125307. The next prime is 20125321. The reversal of 20125316 is 61352102.

It can be written as a sum of positive squares in only one way, i.e., 15241216 + 4884100 = 3904^2 + 2210^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2515661 + ... + 2515668.

It is an arithmetic number, because the mean of its divisors is an integer number (5869885).

Almost surely, 2^20125316 is an apocalyptic number.

It is an amenable number.

20125316 is a deficient number, since it is larger than the sum of its proper divisors (15093994).

20125316 is a wasteful number, since it uses less digits than its factorization.

20125316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031333 (or 5031331 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 20125316 is about 4486.1248310764. The cubic root of 20125316 is about 272.0075149308.

Adding to 20125316 its reverse (61352102), we get a palindrome (81477418).

The spelling of 20125316 in words is "twenty million, one hundred twenty-five thousand, three hundred sixteen".