115666501425 has 12 divisors (see below), whose sum is σ = 191235282480. Its totient is φ = 61688800720.

The previous prime is 115666501409. The next prime is 115666501439. The reversal of 115666501425 is 524105666511.

It is not a de Polignac number, because 115666501425 - 2⁴ = 115666501409 is a prime.

It is a super-3 number, since 3×115666501425³ (a number of 34 digits) contains 333 as substring.

It is a Curzon 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, 771109935 + ... + 771110084.

It is an arithmetic number, because the mean of its divisors is an integer number (15936273540).

Almost surely, 2^115666501425 is an apocalyptic number.

115666501425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115666501425 is a deficient number, since it is larger than the sum of its proper divisors (75568781055).

115666501425 is a wasteful number, since it uses less digits than its factorization.

115666501425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542220032 (or 1542220027 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 115666501425 in words is "one hundred fifteen billion, six hundred sixty-six million, five hundred one thousand, four hundred twenty-five".