625321399 has 2 divisors, whose sum is σ = 625321400. Its totient is φ = 625321398.

The previous prime is 625321373. The next prime is 625321451. The reversal of 625321399 is 993123526.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 625321399 - 2⁷ = 625321271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625321339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312660699 + 312660700.

It is an arithmetic number, because the mean of its divisors is an integer number (312660700).

Almost surely, 2^625321399 is an apocalyptic number.

625321399 is a deficient number, since it is larger than the sum of its proper divisors (1).

625321399 is an equidigital number, since it uses as much as digits as its factorization.

625321399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 40.

The square root of 625321399 is about 25006.4271538339. The cubic root of 625321399 is about 855.1345041064.

The spelling of 625321399 in words is "six hundred twenty-five million, three hundred twenty-one thousand, three hundred ninety-nine".