125439995 has 8 divisors (see below), whose sum is σ = 158450640. Its totient is φ = 95070240.

The previous prime is 125439949. The next prime is 125439997. The reversal of 125439995 is 599934521.

125439995 is nontrivially palindromic in base 9.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125439995 - 2¹⁴ = 125423611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125439997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 660116 + ... + 660305.

It is an arithmetic number, because the mean of its divisors is an integer number (19806330).

Almost surely, 2^125439995 is an apocalyptic number.

125439995 is a deficient number, since it is larger than the sum of its proper divisors (33010645).

125439995 is a wasteful number, since it uses less digits than its factorization.

125439995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320445.

The product of its digits is 437400, while the sum is 47.

The square root of 125439995 is about 11199.9997767857. Note that the first 3 decimals coincide. The cubic root of 125439995 is about 500.5859730030.

The spelling of 125439995 in words is "one hundred twenty-five million, four hundred thirty-nine thousand, nine hundred ninety-five".