625791005 has 12 divisors (see below), whose sum is σ = 873553500. Its totient is φ = 429113664.

The previous prime is 625790989. The next prime is 625791031. The reversal of 625791005 is 500197526.

It can be written as a sum of positive squares in 2 ways, for example, as 125910841 + 499880164 = 11221^2 + 22358^2 .

It is not a de Polignac number, because 625791005 - 2⁴ = 625790989 is a prime.

It is a super-2 number, since 2×625791005² = 783228763877820050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1276880 + ... + 1277369.

It is an arithmetic number, because the mean of its divisors is an integer number (72796125).

Almost surely, 2^625791005 is an apocalyptic number.

It is an amenable number.

625791005 is a deficient number, since it is larger than the sum of its proper divisors (247762495).

625791005 is a wasteful number, since it uses less digits than its factorization.

625791005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554268 (or 2554261 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 625791005 is about 25015.8150976537. The cubic root of 625791005 is about 855.3485144862.

The spelling of 625791005 in words is "six hundred twenty-five million, seven hundred ninety-one thousand, five".