1634656125 has 32 divisors (see below), whose sum is σ = 2748170880. Its totient is φ = 862809600.

The previous prime is 1634656123. The next prime is 1634656171. The reversal of 1634656125 is 5216564361.

It is not a de Polignac number, because 1634656125 - 2¹ = 1634656123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1634656123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13906 + ... + 58844.

It is an arithmetic number, because the mean of its divisors is an integer number (85880340).

Almost surely, 2^1634656125 is an apocalyptic number.

1634656125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1634656125 is a deficient number, since it is larger than the sum of its proper divisors (1113514755).

1634656125 is an equidigital number, since it uses as much as digits as its factorization.

1634656125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45054 (or 45044 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 1634656125 is about 40430.8808338379. The cubic root of 1634656125 is about 1177.9914420337.

The spelling of 1634656125 in words is "one billion, six hundred thirty-four million, six hundred fifty-six thousand, one hundred twenty-five".