125112155 has 32 divisors (see below), whose sum is σ = 178675200. Its totient is φ = 82317312.

The previous prime is 125112149. The next prime is 125112161. The reversal of 125112155 is 551211521.

It is an interprime number because it is at equal distance from previous prime (125112149) and next prime (125112161).

It is not a de Polignac number, because 125112155 - 2²⁴ = 108334939 is a prime.

It is a super-3 number, since 3×125112155³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125112155.

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 31 ways as a sum of consecutive naturals, for example, 88091 + ... + 89499.

It is an arithmetic number, because the mean of its divisors is an integer number (5583600).

Almost surely, 2^125112155 is an apocalyptic number.

125112155 is a deficient number, since it is larger than the sum of its proper divisors (53563045).

125112155 is a wasteful number, since it uses less digits than its factorization.

125112155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523.

The product of its digits is 500, while the sum is 23.

The square root of 125112155 is about 11185.3544870067. The cubic root of 125112155 is about 500.1494952979.

Adding to 125112155 its reverse (551211521), we get a palindrome (676323676).

The spelling of 125112155 in words is "one hundred twenty-five million, one hundred twelve thousand, one hundred fifty-five".