625113221 has 2 divisors, whose sum is σ = 625113222. Its totient is φ = 625113220.

The previous prime is 625113211. The next prime is 625113257. The reversal of 625113221 is 122311526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 483384196 + 141729025 = 21986^2 + 11905^2 .

It is a cyclic number.

It is not a de Polignac number, because 625113221 - 2⁶ = 625113157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625113211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312556610 + 312556611.

It is an arithmetic number, because the mean of its divisors is an integer number (312556611).

Almost surely, 2^625113221 is an apocalyptic number.

It is an amenable number.

625113221 is a deficient number, since it is larger than the sum of its proper divisors (1).

625113221 is an equidigital number, since it uses as much as digits as its factorization.

625113221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 23.

The square root of 625113221 is about 25002.2643174573. The cubic root of 625113221 is about 855.0395982709.

Adding to 625113221 its reverse (122311526), we get a palindrome (747424747).

The spelling of 625113221 in words is "six hundred twenty-five million, one hundred thirteen thousand, two hundred twenty-one".