117997425 has 192 divisors, whose sum is σ = 284981760. Its totient is φ = 46448640.

The previous prime is 117997423. The next prime is 117997427. The reversal of 117997425 is 524799711.

It is an interprime number because it is at equal distance from previous prime (117997423) and next prime (117997427).

It is not a de Polignac number, because 117997425 - 2¹ = 117997423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117997423) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1044169 + ... + 1044281.

It is an arithmetic number, because the mean of its divisors is an integer number (1484280).

Almost surely, 2^117997425 is an apocalyptic number.

117997425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117997425 is an abundant number, since it is smaller than the sum of its proper divisors (166984335).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117997425 is a wasteful number, since it uses less digits than its factorization.

117997425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 158 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 117997425 is about 10862.6619665715. The cubic root of 117997425 is about 490.4832453198.

The spelling of 117997425 in words is "one hundred seventeen million, nine hundred ninety-seven thousand, four hundred twenty-five".