625009373 has 2 divisors, whose sum is σ = 625009374. Its totient is φ = 625009372.

The previous prime is 625009303. The next prime is 625009381. The reversal of 625009373 is 373900526.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 599172484 + 25836889 = 24478^2 + 5083^2 .

It is a cyclic number.

It is not a de Polignac number, because 625009373 - 2¹⁴ = 624992989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625009303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312504686 + 312504687.

It is an arithmetic number, because the mean of its divisors is an integer number (312504687).

Almost surely, 2^625009373 is an apocalyptic number.

It is an amenable number.

625009373 is a deficient number, since it is larger than the sum of its proper divisors (1).

625009373 is an equidigital number, since it uses as much as digits as its factorization.

625009373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 35.

The square root of 625009373 is about 25000.1874592972. The cubic root of 625009373 is about 854.9922473449.

Adding to 625009373 its reverse (373900526), we get a palindrome (998909899).

The spelling of 625009373 in words is "six hundred twenty-five million, nine thousand, three hundred seventy-three".