125245439 has 4 divisors (see below), whose sum is σ = 136631400. Its totient is φ = 113859480.

The previous prime is 125245433. The next prime is 125245441. The reversal of 125245439 is 934542521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125245439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125245399 and 125245408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125245433) 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, 5692964 + ... + 5692985.

It is an arithmetic number, because the mean of its divisors is an integer number (34157850).

Almost surely, 2^125245439 is an apocalyptic number.

125245439 is a deficient number, since it is larger than the sum of its proper divisors (11385961).

125245439 is a wasteful number, since it uses less digits than its factorization.

125245439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11385960.

The product of its digits is 43200, while the sum is 35.

The square root of 125245439 is about 11191.3108704923. The cubic root of 125245439 is about 500.3270380456.

The spelling of 125245439 in words is "one hundred twenty-five million, two hundred forty-five thousand, four hundred thirty-nine".