634000025 has 12 divisors (see below), whose sum is σ = 786547500. Its totient is φ = 506950080.

The previous prime is 634000021. The next prime is 634000027. The reversal of 634000025 is 520000436.

It can be written as a sum of positive squares in 6 ways, for example, as 2181529 + 631818496 = 1477^2 + 25136^2 .

It is not a de Polignac number, because 634000025 - 2² = 634000021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 633999970 and 634000006.

It is not an unprimeable number, because it can be changed into a prime (634000021) by changing a digit.

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, 58751 + ... + 68699.

It is an arithmetic number, because the mean of its divisors is an integer number (65545625).

Almost surely, 2^634000025 is an apocalyptic number.

It is an amenable number.

634000025 is a deficient number, since it is larger than the sum of its proper divisors (152547475).

634000025 is a wasteful number, since it uses less digits than its factorization.

634000025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12508 (or 12503 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 634000025 is about 25179.3571204668. The cubic root of 634000025 is about 859.0723840735.

The spelling of 634000025 in words is "six hundred thirty-four million, twenty-five", and thus it is an aban number.