125115555 has 16 divisors (see below), whose sum is σ = 200760480. Its totient is φ = 66536448.

The previous prime is 125115553. The next prime is 125115569. The reversal of 125115555 is 555511521.

It is not a de Polignac number, because 125115555 - 2¹ = 125115553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125115553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6520 + ... + 17109.

It is an arithmetic number, because the mean of its divisors is an integer number (12547530).

Almost surely, 2^125115555 is an apocalyptic number.

125115555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125115555 is a deficient number, since it is larger than the sum of its proper divisors (75644925).

125115555 is a wasteful number, since it uses less digits than its factorization.

125115555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23990.

The product of its digits is 6250, while the sum is 30.

The square root of 125115555 is about 11185.5064704286. The cubic root of 125115555 is about 500.1540258805.

The spelling of 125115555 in words is "one hundred twenty-five million, one hundred fifteen thousand, five hundred fifty-five".