1625717317 has 16 divisors (see below), whose sum is σ = 1886429952. Its totient is φ = 1372170240.

The previous prime is 1625717309. The next prime is 1625717321. The reversal of 1625717317 is 7137175261.

It is not a de Polignac number, because 1625717317 - 2³ = 1625717309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1625717317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625717017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571623 + ... + 574459.

It is an arithmetic number, because the mean of its divisors is an integer number (117901872).

Almost surely, 2^1625717317 is an apocalyptic number.

It is an amenable number.

1625717317 is a deficient number, since it is larger than the sum of its proper divisors (260712635).

1625717317 is a wasteful number, since it uses less digits than its factorization.

1625717317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068.

The product of its digits is 61740, while the sum is 40.

The square root of 1625717317 is about 40320.1849822146. The cubic root of 1625717317 is about 1175.8403083966.

The spelling of 1625717317 in words is "one billion, six hundred twenty-five million, seven hundred seventeen thousand, three hundred seventeen".