125655155 has 4 divisors (see below), whose sum is σ = 150786192. Its totient is φ = 100524120.

The previous prime is 125655139. The next prime is 125655203. The reversal of 125655155 is 551556521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551556521 = 37 ⋅14906933.

It is not a de Polignac number, because 125655155 - 2⁴ = 125655139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12565511 + ... + 12565520.

It is an arithmetic number, because the mean of its divisors is an integer number (37696548).

Almost surely, 2^125655155 is an apocalyptic number.

125655155 is a deficient number, since it is larger than the sum of its proper divisors (25131037).

125655155 is an equidigital number, since it uses as much as digits as its factorization.

125655155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25131036.

The product of its digits is 37500, while the sum is 35.

The square root of 125655155 is about 11209.6010187696. The cubic root of 125655155 is about 500.8720182841.

The spelling of 125655155 in words is "one hundred twenty-five million, six hundred fifty-five thousand, one hundred fifty-five".