625450321 has 2 divisors, whose sum is σ = 625450322. Its totient is φ = 625450320.

The previous prime is 625450313. The next prime is 625450369. The reversal of 625450321 is 123054526.

625450321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 509134096 + 116316225 = 22564^2 + 10785^2 .

It is a cyclic number.

It is not a de Polignac number, because 625450321 - 2³ = 625450313 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 625450321.

It is not a weakly prime, because it can be changed into another prime (625450381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312725160 + 312725161.

It is an arithmetic number, because the mean of its divisors is an integer number (312725161).

Almost surely, 2^625450321 is an apocalyptic number.

It is an amenable number.

625450321 is a deficient number, since it is larger than the sum of its proper divisors (1).

625450321 is an equidigital number, since it uses as much as digits as its factorization.

625450321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 625450321 is about 25009.0047982722. The cubic root of 625450321 is about 855.1932675280.

The spelling of 625450321 in words is "six hundred twenty-five million, four hundred fifty thousand, three hundred twenty-one".