625434529 has 4 divisors (see below), whose sum is σ = 625681684. Its totient is φ = 625187376.

The previous prime is 625434493. The next prime is 625434553. The reversal of 625434529 is 925434526.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 438483600 + 186950929 = 20940^2 + 13673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625434529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 625434491 and 625434500.

It is not an unprimeable number, because it can be changed into a prime (625434599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119742 + ... + 124855.

It is an arithmetic number, because the mean of its divisors is an integer number (156420421).

Almost surely, 2^625434529 is an apocalyptic number.

It is an amenable number.

625434529 is a deficient number, since it is larger than the sum of its proper divisors (247155).

625434529 is a wasteful number, since it uses less digits than its factorization.

625434529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247154.

The product of its digits is 259200, while the sum is 40.

The square root of 625434529 is about 25008.6890700013. The cubic root of 625434529 is about 855.1860698736.

The spelling of 625434529 in words is "six hundred twenty-five million, four hundred thirty-four thousand, five hundred twenty-nine".