125165437 has 4 divisors (see below), whose sum is σ = 125195580. Its totient is φ = 125135296.

The previous prime is 125165429. The next prime is 125165449. The reversal of 125165437 is 734561521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 734561521 = 1811 ⋅405611.

It can be written as a sum of positive squares in 2 ways, for example, as 55041561 + 70123876 = 7419^2 + 8374^2 .

It is a cyclic number.

It is not a de Polignac number, because 125165437 - 2³ = 125165429 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 (125165837) 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, 7612 + ... + 17557.

It is an arithmetic number, because the mean of its divisors is an integer number (31298895).

Almost surely, 2^125165437 is an apocalyptic number.

It is an amenable number.

125165437 is a deficient number, since it is larger than the sum of its proper divisors (30143).

125165437 is an equidigital number, since it uses as much as digits as its factorization.

125165437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30142.

The product of its digits is 25200, while the sum is 34.

The square root of 125165437 is about 11187.7360086838. The cubic root of 125165437 is about 500.2204854247.

The spelling of 125165437 in words is "one hundred twenty-five million, one hundred sixty-five thousand, four hundred thirty-seven".