20625113 has 2 divisors, whose sum is σ = 20625114. Its totient is φ = 20625112.

The previous prime is 20625107. The next prime is 20625139. The reversal of 20625113 is 31152602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19430464 + 1194649 = 4408^2 + 1093^2 .

It is a cyclic number.

It is not a de Polignac number, because 20625113 - 2⁶ = 20625049 is a prime.

It is not a weakly prime, because it can be changed into another prime (20625103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10312556 + 10312557.

It is an arithmetic number, because the mean of its divisors is an integer number (10312557).

Almost surely, 2^20625113 is an apocalyptic number.

It is an amenable number.

20625113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20625113 is an equidigital number, since it uses as much as digits as its factorization.

20625113 is an odious number, because the sum of its binary digits is odd.

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

The square root of 20625113 is about 4541.4879720197. The cubic root of 20625113 is about 274.2408284556.

Adding to 20625113 its reverse (31152602), we get a palindrome (51777715).

The spelling of 20625113 in words is "twenty million, six hundred twenty-five thousand, one hundred thirteen".