625129 has 2 divisors, whose sum is σ = 625130. Its totient is φ = 625128.

The previous prime is 625111. The next prime is 625133. The reversal of 625129 is 921526.

625129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 522729 + 102400 = 723^2 + 320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625129 is a prime.

625129 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (625109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312564 + 312565.

It is an arithmetic number, because the mean of its divisors is an integer number (312565).

2⁶²⁵¹²⁹ is an apocalyptic number.

It is an amenable number.

625129 is a deficient number, since it is larger than the sum of its proper divisors (1).

625129 is an equidigital number, since it uses as much as digits as its factorization.

625129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 625129 is about 790.6509975963. The cubic root of 625129 is about 85.5046792464.

The spelling of 625129 in words is "six hundred twenty-five thousand, one hundred twenty-nine".