125045031 has 4 divisors (see below), whose sum is σ = 166726712. Its totient is φ = 83363352.

The previous prime is 125045027. The next prime is 125045057. The reversal of 125045031 is 130540521.

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

It is not a de Polignac number, because 125045031 - 2² = 125045027 is a prime.

It is a super-2 number, since 2×125045031² = 31272519555581922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125044989 and 125045007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125045021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20840836 + ... + 20840841.

It is an arithmetic number, because the mean of its divisors is an integer number (41681678).

Almost surely, 2^125045031 is an apocalyptic number.

125045031 is a deficient number, since it is larger than the sum of its proper divisors (41681681).

125045031 is an equidigital number, since it uses as much as digits as its factorization.

125045031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41681680.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 125045031 is about 11182.3535537024. The cubic root of 125045031 is about 500.0600341249.

Adding to 125045031 its reverse (130540521), we get a palindrome (255585552).

The spelling of 125045031 in words is "one hundred twenty-five million, forty-five thousand, thirty-one".