125445031 has 4 divisors (see below), whose sum is σ = 125945064. Its totient is φ = 124945000.

The previous prime is 125445017. The next prime is 125445043. The reversal of 125445031 is 130544521.

It is a happy number.

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 125445031 - 2⁷ = 125444903 is a prime.

It is a super-2 number, since 2×125445031² = 31472911605181922, 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 = 125444987 and 125445005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125445071) 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, 249640 + ... + 250141.

It is an arithmetic number, because the mean of its divisors is an integer number (31486266).

Almost surely, 2^125445031 is an apocalyptic number.

125445031 is a deficient number, since it is larger than the sum of its proper divisors (500033).

125445031 is an equidigital number, since it uses as much as digits as its factorization.

125445031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500032.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 125445031 is about 11200.2245959624. The cubic root of 125445031 is about 500.5926718692.

Adding to 125445031 its reverse (130544521), we get a palindrome (255989552).

The spelling of 125445031 in words is "one hundred twenty-five million, four hundred forty-five thousand, thirty-one".