125212431 has 12 divisors (see below), whose sum is σ = 170930328. Its totient is φ = 81530064.

The previous prime is 125212421. The next prime is 125212453. The reversal of 125212431 is 134212521.

It is not a de Polignac number, because 125212431 - 2⁷ = 125212303 is a prime.

It is a super-2 number, since 2×125212431² = 31356305753859522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125212398 and 125212407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125212411) 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 11 ways as a sum of consecutive naturals, for example, 5740 + ... + 16833.

It is an arithmetic number, because the mean of its divisors is an integer number (14244194).

Almost surely, 2^125212431 is an apocalyptic number.

125212431 is a deficient number, since it is larger than the sum of its proper divisors (45717897).

125212431 is an equidigital number, since it uses as much as digits as its factorization.

125212431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22662 (or 22619 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 125212431 is about 11189.8360577803. The cubic root of 125212431 is about 500.2830810333.

Adding to 125212431 its reverse (134212521), we get a palindrome (259424952).

The spelling of 125212431 in words is "one hundred twenty-five million, two hundred twelve thousand, four hundred thirty-one".