125213151 has 16 divisors (see below), whose sum is σ = 193650944. Its totient is φ = 70481664.

The previous prime is 125213149. The next prime is 125213159. The reversal of 125213151 is 151312521.

It is not a de Polignac number, because 125213151 - 2¹ = 125213149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125213159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43090 + ... + 45903.

It is an arithmetic number, because the mean of its divisors is an integer number (12103184).

Almost surely, 2^125213151 is an apocalyptic number.

125213151 is a deficient number, since it is larger than the sum of its proper divisors (68437793).

125213151 is an equidigital number, since it uses as much as digits as its factorization.

125213151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89070.

The product of its digits is 300, while the sum is 21.

The square root of 125213151 is about 11189.8682297872. The cubic root of 125213151 is about 500.2840399454.

Adding to 125213151 its reverse (151312521), we get a palindrome (276525672).

The spelling of 125213151 in words is "one hundred twenty-five million, two hundred thirteen thousand, one hundred fifty-one".