625532397 has 16 divisors (see below), whose sum is σ = 978955392. Its totient is φ = 347785920.

The previous prime is 625532393. The next prime is 625532399. The reversal of 625532397 is 793235526.

It is not a de Polignac number, because 625532397 - 2² = 625532393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625532393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401754 + ... + 403307.

It is an arithmetic number, because the mean of its divisors is an integer number (61184712).

Almost surely, 2^625532397 is an apocalyptic number.

It is an amenable number.

625532397 is a deficient number, since it is larger than the sum of its proper divisors (353422995).

625532397 is a wasteful number, since it uses less digits than its factorization.

625532397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805108.

The product of its digits is 340200, while the sum is 42.

The square root of 625532397 is about 25010.6456733928. The cubic root of 625532397 is about 855.2306740548.

The spelling of 625532397 in words is "six hundred twenty-five million, five hundred thirty-two thousand, three hundred ninety-seven".