117731025 has 36 divisors (see below), whose sum is σ = 217684480. Its totient is φ = 60760800.

The previous prime is 117731021. The next prime is 117731041. The reversal of 117731025 is 520137711.

It is a happy number.

It is not a de Polignac number, because 117731025 - 2² = 117731021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117731025.

It is not an unprimeable number, because it can be changed into a prime (117731021) 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 35 ways as a sum of consecutive naturals, for example, 1465 + ... + 15414.

Almost surely, 2^117731025 is an apocalyptic number.

117731025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117731025 is a deficient number, since it is larger than the sum of its proper divisors (99953455).

117731025 is a wasteful number, since it uses less digits than its factorization.

117731025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16926 (or 16918 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 117731025 is about 10850.3928500308. The cubic root of 117731025 is about 490.1138497081.

Adding to 117731025 its reverse (520137711), we get a palindrome (637868736).

The spelling of 117731025 in words is "one hundred seventeen million, seven hundred thirty-one thousand, twenty-five".