625641634 has 8 divisors (see below), whose sum is σ = 951680448. Its totient is φ = 308414820.

The previous prime is 625641631. The next prime is 625641637. The reversal of 625641634 is 436146526.

It is an interprime number because it is at equal distance from previous prime (625641631) and next prime (625641637).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 625641593 and 625641602.

It is not an unprimeable number, because it can be changed into a prime (625641631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2202822 + ... + 2203105.

It is an arithmetic number, because the mean of its divisors is an integer number (118960056).

Almost surely, 2^625641634 is an apocalyptic number.

625641634 is a deficient number, since it is larger than the sum of its proper divisors (326038814).

625641634 is a wasteful number, since it uses less digits than its factorization.

625641634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406000.

The product of its digits is 103680, while the sum is 37.

The square root of 625641634 is about 25012.8293881360. The cubic root of 625641634 is about 855.2804542612.

The spelling of 625641634 in words is "six hundred twenty-five million, six hundred forty-one thousand, six hundred thirty-four".