125345139 has 4 divisors (see below), whose sum is σ = 167126856. Its totient is φ = 83563424.

The previous prime is 125345119. The next prime is 125345149. The reversal of 125345139 is 931543521.

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 125345139 - 2⁸ = 125344883 is a prime.

It is a super-2 number, since 2×125345139² = 31422807741858642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125345119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20890854 + ... + 20890859.

It is an arithmetic number, because the mean of its divisors is an integer number (41781714).

Almost surely, 2^125345139 is an apocalyptic number.

125345139 is a deficient number, since it is larger than the sum of its proper divisors (41781717).

125345139 is an equidigital number, since it uses as much as digits as its factorization.

125345139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41781716.

The product of its digits is 16200, while the sum is 33.

The square root of 125345139 is about 11195.7643329967. The cubic root of 125345139 is about 500.4597624407.

The spelling of 125345139 in words is "one hundred twenty-five million, three hundred forty-five thousand, one hundred thirty-nine".