125211151 has 4 divisors (see below), whose sum is σ = 134842792. Its totient is φ = 115579512.

The previous prime is 125211113. The next prime is 125211169. The reversal of 125211151 is 151112521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125211151 - 2²¹ = 123113999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125211181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4815801 + ... + 4815826.

It is an arithmetic number, because the mean of its divisors is an integer number (33710698).

Almost surely, 2^125211151 is an apocalyptic number.

125211151 is a deficient number, since it is larger than the sum of its proper divisors (9631641).

125211151 is an equidigital number, since it uses as much as digits as its factorization.

125211151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9631640.

The product of its digits is 100, while the sum is 19.

The square root of 125211151 is about 11189.7788628730. The cubic root of 125211151 is about 500.2813762917.

Adding to 125211151 its reverse (151112521), we get a palindrome (276323672).

It can be divided in two parts, 1252 and 11151, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 125211151 in words is "one hundred twenty-five million, two hundred eleven thousand, one hundred fifty-one".