1165634625 has 16 divisors (see below), whose sum is σ = 1939616640. Its totient is φ = 621671600.

The previous prime is 1165634539. The next prime is 1165634647. The reversal of 1165634625 is 5264365611.

It is not a de Polignac number, because 1165634625 - 2¹⁹ = 1165110337 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 1553805 + ... + 1554554.

It is an arithmetic number, because the mean of its divisors is an integer number (121226040).

Almost surely, 2^1165634625 is an apocalyptic number.

1165634625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1165634625 is a deficient number, since it is larger than the sum of its proper divisors (773982015).

1165634625 is an equidigital number, since it uses as much as digits as its factorization.

1165634625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108377 (or 3108367 counting only the distinct ones).

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

The square root of 1165634625 is about 34141.3916675932. The cubic root of 1165634625 is about 1052.4160915423.

The spelling of 1165634625 in words is "one billion, one hundred sixty-five million, six hundred thirty-four thousand, six hundred twenty-five".