117961825 has 12 divisors (see below), whose sum is σ = 152633088. Its totient is φ = 90266000.

The previous prime is 117961819. The next prime is 117961843. The reversal of 117961825 is 528169711.

It is a happy number.

It is not a de Polignac number, because 117961825 - 2¹⁵ = 117929057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102001 + ... + 103150.

It is an arithmetic number, because the mean of its divisors is an integer number (12719424).

Almost surely, 2^117961825 is an apocalyptic number.

It is an amenable number.

117961825 is a deficient number, since it is larger than the sum of its proper divisors (34671263).

117961825 is a wasteful number, since it uses less digits than its factorization.

117961825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205184 (or 205179 counting only the distinct ones).

The product of its digits is 30240, while the sum is 40.

The square root of 117961825 is about 10861.0232022586. The cubic root of 117961825 is about 490.4339138483.

The spelling of 117961825 in words is "one hundred seventeen million, nine hundred sixty-one thousand, eight hundred twenty-five".