625700129 has 2 divisors, whose sum is σ = 625700130. Its totient is φ = 625700128.

The previous prime is 625700123. The next prime is 625700137. The reversal of 625700129 is 921007526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623850529 + 1849600 = 24977^2 + 1360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625700129 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 625700095 and 625700104.

It is not a weakly prime, because it can be changed into another prime (625700123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312850064 + 312850065.

It is an arithmetic number, because the mean of its divisors is an integer number (312850065).

Almost surely, 2^625700129 is an apocalyptic number.

It is an amenable number.

625700129 is a deficient number, since it is larger than the sum of its proper divisors (1).

625700129 is an equidigital number, since it uses as much as digits as its factorization.

625700129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 625700129 is about 25013.9986607499. The cubic root of 625700129 is about 855.3071085355.

The spelling of 625700129 in words is "six hundred twenty-five million, seven hundred thousand, one hundred twenty-nine".