125312155 has 16 divisors (see below), whose sum is σ = 156318624. Its totient is φ = 96353280.

The previous prime is 125312153. The next prime is 125312171. The reversal of 125312155 is 551213521.

It is not a de Polignac number, because 125312155 - 2¹ = 125312153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125312153) 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, 11275 + ... + 19435.

It is an arithmetic number, because the mean of its divisors is an integer number (9769914).

Almost surely, 2^125312155 is an apocalyptic number.

125312155 is a deficient number, since it is larger than the sum of its proper divisors (31006469).

125312155 is an equidigital number, since it uses as much as digits as its factorization.

125312155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8286.

The product of its digits is 1500, while the sum is 25.

The square root of 125312155 is about 11194.2911789894. The cubic root of 125312155 is about 500.4158606905.

Adding to 125312155 its reverse (551213521), we get a palindrome (676525676).

The spelling of 125312155 in words is "one hundred twenty-five million, three hundred twelve thousand, one hundred fifty-five".