625356247 has 2 divisors, whose sum is σ = 625356248. Its totient is φ = 625356246.

The previous prime is 625356239. The next prime is 625356283. The reversal of 625356247 is 742653526.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 625356247 - 2³ = 625356239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625356047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312678123 + 312678124.

It is an arithmetic number, because the mean of its divisors is an integer number (312678124).

Almost surely, 2^625356247 is an apocalyptic number.

625356247 is a deficient number, since it is larger than the sum of its proper divisors (1).

625356247 is an equidigital number, since it uses as much as digits as its factorization.

625356247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 40.

The square root of 625356247 is about 25007.1239249939. The cubic root of 625356247 is about 855.1503888305.

It can be divided in two parts, 6253 and 56247, that added together give a square (62500 = 250²).

The spelling of 625356247 in words is "six hundred twenty-five million, three hundred fifty-six thousand, two hundred forty-seven".