117725515 has 4 divisors (see below), whose sum is σ = 141270624. Its totient is φ = 94180408.

The previous prime is 117725497. The next prime is 117725519. The reversal of 117725515 is 515527711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117725515 - 2¹⁷ = 117594443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117725519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11772547 + ... + 11772556.

It is an arithmetic number, because the mean of its divisors is an integer number (35317656).

Almost surely, 2^117725515 is an apocalyptic number.

117725515 is a deficient number, since it is larger than the sum of its proper divisors (23545109).

117725515 is an equidigital number, since it uses as much as digits as its factorization.

117725515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23545108.

The product of its digits is 12250, while the sum is 34.

The square root of 117725515 is about 10850.1389392026. The cubic root of 117725515 is about 490.1062035518.

The spelling of 117725515 in words is "one hundred seventeen million, seven hundred twenty-five thousand, five hundred fifteen".