625454857 has 2 divisors, whose sum is σ = 625454858. Its totient is φ = 625454856.

The previous prime is 625454827. The next prime is 625454881. The reversal of 625454857 is 758454526.

625454857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 590927481 + 34527376 = 24309^2 + 5876^2 .

It is a cyclic number.

It is not a de Polignac number, because 625454857 - 2¹¹ = 625452809 is a prime.

It is not a weakly prime, because it can be changed into another prime (625454827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312727428 + 312727429.

It is an arithmetic number, because the mean of its divisors is an integer number (312727429).

Almost surely, 2^625454857 is an apocalyptic number.

It is an amenable number.

625454857 is a deficient number, since it is larger than the sum of its proper divisors (1).

625454857 is an equidigital number, since it uses as much as digits as its factorization.

625454857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344000, while the sum is 46.

The square root of 625454857 is about 25009.0954854429. The cubic root of 625454857 is about 855.1953349170.

The spelling of 625454857 in words is "six hundred twenty-five million, four hundred fifty-four thousand, eight hundred fifty-seven".