20112625 has 16 divisors (see below), whose sum is σ = 27033552. Its totient is φ = 14851200.

The previous prime is 20112611. The next prime is 20112629. The reversal of 20112625 is 52621102.

It can be written as a sum of positive squares in 8 ways, for example, as 14622976 + 5489649 = 3824^2 + 2343^2 .

It is not a de Polignac number, because 20112625 - 2¹³ = 20104433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20112629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4564 + ... + 7813.

It is an arithmetic number, because the mean of its divisors is an integer number (1689597).

Almost surely, 2^20112625 is an apocalyptic number.

20112625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20112625 is a deficient number, since it is larger than the sum of its proper divisors (6920927).

20112625 is a wasteful number, since it uses less digits than its factorization.

20112625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12405 (or 12395 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 20112625 is about 4484.7101355606. The cubic root of 20112625 is about 271.9503270379.

Adding to 20112625 its reverse (52621102), we get a palindrome (72733727).

The spelling of 20112625 in words is "twenty million, one hundred twelve thousand, six hundred twenty-five".