625236457 has 2 divisors, whose sum is σ = 625236458. Its totient is φ = 625236456.

The previous prime is 625236449. The next prime is 625236487. The reversal of 625236457 is 754632526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600446016 + 24790441 = 24504^2 + 4979^2 .

It is a cyclic number.

It is not a de Polignac number, because 625236457 - 2³ = 625236449 is a prime.

It is not a weakly prime, because it can be changed into another prime (625236487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312618228 + 312618229.

It is an arithmetic number, because the mean of its divisors is an integer number (312618229).

Almost surely, 2^625236457 is an apocalyptic number.

It is an amenable number.

625236457 is a deficient number, since it is larger than the sum of its proper divisors (1).

625236457 is an equidigital number, since it uses as much as digits as its factorization.

625236457 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 625236457 is about 25004.7286927893. The cubic root of 625236457 is about 855.0957826189.

The spelling of 625236457 in words is "six hundred twenty-five million, two hundred thirty-six thousand, four hundred fifty-seven".