625802257 has 2 divisors, whose sum is σ = 625802258. Its totient is φ = 625802256.

The previous prime is 625802237. The next prime is 625802329. The reversal of 625802257 is 752208526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545502736 + 80299521 = 23356^2 + 8961^2 .

It is a cyclic number.

It is not a de Polignac number, because 625802257 - 2⁷ = 625802129 is a prime.

It is not a weakly prime, because it can be changed into another prime (625802237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312901128 + 312901129.

It is an arithmetic number, because the mean of its divisors is an integer number (312901129).

Almost surely, 2^625802257 is an apocalyptic number.

It is an amenable number.

625802257 is a deficient number, since it is larger than the sum of its proper divisors (1).

625802257 is an equidigital number, since it uses as much as digits as its factorization.

625802257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 625802257 is about 25016.0399943716. The cubic root of 625802257 is about 855.3536409707.

The spelling of 625802257 in words is "six hundred twenty-five million, eight hundred two thousand, two hundred fifty-seven".