625949213 has 2 divisors, whose sum is σ = 625949214. Its totient is φ = 625949212.

The previous prime is 625949111. The next prime is 625949227. The reversal of 625949213 is 312949526.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339222724 + 286726489 = 18418^2 + 16933^2 .

It is a cyclic number.

It is not a de Polignac number, because 625949213 - 2⁸ = 625948957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625949273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312974606 + 312974607.

It is an arithmetic number, because the mean of its divisors is an integer number (312974607).

Almost surely, 2^625949213 is an apocalyptic number.

It is an amenable number.

625949213 is a deficient number, since it is larger than the sum of its proper divisors (1).

625949213 is an equidigital number, since it uses as much as digits as its factorization.

625949213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 625949213 is about 25018.9770574258. The cubic root of 625949213 is about 855.4205894412.

The spelling of 625949213 in words is "six hundred twenty-five million, nine hundred forty-nine thousand, two hundred thirteen".