125212331 has 4 divisors (see below), whose sum is σ = 125483232. Its totient is φ = 124941432.

The previous prime is 125212313. The next prime is 125212357. The reversal of 125212331 is 133212521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133212521 = 13 ⋅10247117.

It is a cyclic number.

It is not a de Polignac number, because 125212331 - 2⁶ = 125212267 is a prime.

It is a super-2 number, since 2×125212331² = 31356255668907122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125272331) 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, 134756 + ... + 135681.

It is an arithmetic number, because the mean of its divisors is an integer number (31370808).

Almost surely, 2^125212331 is an apocalyptic number.

125212331 is a deficient number, since it is larger than the sum of its proper divisors (270901).

125212331 is an equidigital number, since it uses as much as digits as its factorization.

125212331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270900.

The product of its digits is 360, while the sum is 20.

The square root of 125212331 is about 11189.8315894387. The cubic root of 125212331 is about 500.2829478508.

Adding to 125212331 its reverse (133212521), we get a palindrome (258424852).

The spelling of 125212331 in words is "one hundred twenty-five million, two hundred twelve thousand, three hundred thirty-one".