625585297 has 2 divisors, whose sum is σ = 625585298. Its totient is φ = 625585296.

The previous prime is 625585283. The next prime is 625585309. The reversal of 625585297 is 792585526.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388917841 + 236667456 = 19721^2 + 15384^2 .

It is a cyclic number.

It is not a de Polignac number, because 625585297 - 2²³ = 617196689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 625585297.

It is not a weakly prime, because it can be changed into another prime (625585217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312792648 + 312792649.

It is an arithmetic number, because the mean of its divisors is an integer number (312792649).

Almost surely, 2^625585297 is an apocalyptic number.

It is an amenable number.

625585297 is a deficient number, since it is larger than the sum of its proper divisors (1).

625585297 is an equidigital number, since it uses as much as digits as its factorization.

625585297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512000, while the sum is 49.

The square root of 625585297 is about 25011.7032007019. The cubic root of 625585297 is about 855.2547817470.

The spelling of 625585297 in words is "six hundred twenty-five million, five hundred eighty-five thousand, two hundred ninety-seven".