125116511505 has 8 divisors (see below), whose sum is σ = 200186418432. Its totient is φ = 66728806128.

The previous prime is 125116511497. The next prime is 125116511537. The reversal of 125116511505 is 505115611521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125116511505 - 2³ = 125116511497 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4170550369 + ... + 4170550398.

It is an arithmetic number, because the mean of its divisors is an integer number (25023302304).

Almost surely, 2^125116511505 is an apocalyptic number.

125116511505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125116511505 is a deficient number, since it is larger than the sum of its proper divisors (75069906927).

125116511505 is an equidigital number, since it uses as much as digits as its factorization.

125116511505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8341100775.

The product of its (nonzero) digits is 7500, while the sum is 33.

The spelling of 125116511505 in words is "one hundred twenty-five billion, one hundred sixteen million, five hundred eleven thousand, five hundred five".