625690601 has 2 divisors, whose sum is σ = 625690602. Its totient is φ = 625690600.

The previous prime is 625690591. The next prime is 625690607. The reversal of 625690601 is 106096526.

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., 535459600 + 90231001 = 23140^2 + 9499^2 .

It is a cyclic number.

It is not a de Polignac number, because 625690601 - 2⁶ = 625690537 is a prime.

It is not a weakly prime, because it can be changed into another prime (625690607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312845300 + 312845301.

It is an arithmetic number, because the mean of its divisors is an integer number (312845301).

Almost surely, 2^625690601 is an apocalyptic number.

It is an amenable number.

625690601 is a deficient number, since it is larger than the sum of its proper divisors (1).

625690601 is an equidigital number, since it uses as much as digits as its factorization.

625690601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 625690601 is about 25013.8082066686. The cubic root of 625690601 is about 855.3027670481.

The spelling of 625690601 in words is "six hundred twenty-five million, six hundred ninety thousand, six hundred one".