625242679 has 2 divisors, whose sum is σ = 625242680. Its totient is φ = 625242678.

The previous prime is 625242659. The next prime is 625242691. The reversal of 625242679 is 976242526.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 625242679 - 2²³ = 616854071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625242659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312621339 + 312621340.

It is an arithmetic number, because the mean of its divisors is an integer number (312621340).

Almost surely, 2^625242679 is an apocalyptic number.

625242679 is a deficient number, since it is larger than the sum of its proper divisors (1).

625242679 is an equidigital number, since it uses as much as digits as its factorization.

625242679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 43.

The square root of 625242679 is about 25004.8531089467. The cubic root of 625242679 is about 855.0986190862.

The spelling of 625242679 in words is "six hundred twenty-five million, two hundred forty-two thousand, six hundred seventy-nine".