125437 has 4 divisors (see below), whose sum is σ = 135100. Its totient is φ = 115776.

The previous prime is 125429. The next prime is 125441. The reversal of 125437 is 734521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15876 + 109561 = 126^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 125437 - 2³ = 125429 is a prime.

It is a Duffinian number.

125437 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125407) 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, 4812 + ... + 4837.

It is an arithmetic number, because the mean of its divisors is an integer number (33775).

2¹²⁵⁴³⁷ is an apocalyptic number.

It is an amenable number.

125437 is a deficient number, since it is larger than the sum of its proper divisors (9663).

125437 is an equidigital number, since it uses as much as digits as its factorization.

125437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9662.

The product of its digits is 840, while the sum is 22.

The square root of 125437 is about 354.1708627202. The cubic root of 125437 is about 50.0581988981.

Adding to 125437 its reverse (734521), we get a palindrome (859958).

The spelling of 125437 in words is "one hundred twenty-five thousand, four hundred thirty-seven".