125530311 has 4 divisors (see below), whose sum is σ = 167373752. Its totient is φ = 83686872.

The previous prime is 125530309. The next prime is 125530313. The reversal of 125530311 is 113035521.

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

It is an interprime number because it is at equal distance from previous prime (125530309) and next prime (125530313).

It is not a de Polignac number, because 125530311 - 2¹ = 125530309 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 (125530313) by changing a digit.

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, 20921716 + ... + 20921721.

It is an arithmetic number, because the mean of its divisors is an integer number (41843438).

Almost surely, 2^125530311 is an apocalyptic number.

125530311 is a deficient number, since it is larger than the sum of its proper divisors (41843441).

125530311 is an equidigital number, since it uses as much as digits as its factorization.

125530311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41843440.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 125530311 is about 11204.0310156657. The cubic root of 125530311 is about 500.7060837554.

Adding to 125530311 its reverse (113035521), we get a palindrome (238565832).

The spelling of 125530311 in words is "one hundred twenty-five million, five hundred thirty thousand, three hundred eleven".