625864473 has 24 divisors (see below), whose sum is σ = 977208960. Its totient is φ = 383706720.

The previous prime is 625864433. The next prime is 625864483. The reversal of 625864473 is 374468526.

625864473 is a `hidden beast` number, since 62 + 586 + 4 + 4 + 7 + 3 = 666.

It is not a de Polignac number, because 625864473 - 2⁹ = 625863961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (625864403) 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 23 ways as a sum of consecutive naturals, for example, 21838 + ... + 41576.

It is an arithmetic number, because the mean of its divisors is an integer number (40717040).

Almost surely, 2^625864473 is an apocalyptic number.

It is an amenable number.

625864473 is a deficient number, since it is larger than the sum of its proper divisors (351344487).

625864473 is a wasteful number, since it uses less digits than its factorization.

625864473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20029 (or 20026 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 625864473 is about 25017.2834856225. The cubic root of 625864473 is about 855.3819858769.

The spelling of 625864473 in words is "six hundred twenty-five million, eight hundred sixty-four thousand, four hundred seventy-three".