625497647 has 2 divisors, whose sum is σ = 625497648. Its totient is φ = 625497646.

The previous prime is 625497629. The next prime is 625497659. The reversal of 625497647 is 746794526.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 625497647 - 2⁶ = 625497583 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 625497595 and 625497604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625496647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312748823 + 312748824.

It is an arithmetic number, because the mean of its divisors is an integer number (312748824).

Almost surely, 2^625497647 is an apocalyptic number.

625497647 is a deficient number, since it is larger than the sum of its proper divisors (1).

625497647 is an equidigital number, since it uses as much as digits as its factorization.

625497647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 50.

The square root of 625497647 is about 25009.9509595681. The cubic root of 625497647 is about 855.2148369767.

The spelling of 625497647 in words is "six hundred twenty-five million, four hundred ninety-seven thousand, six hundred forty-seven".