125399847 has 8 divisors (see below), whose sum is σ = 167791744. Its totient is φ = 83303928.

The previous prime is 125399821. The next prime is 125399849. The reversal of 125399847 is 748993521.

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

It is not a de Polignac number, because 125399847 - 2⁶ = 125399783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125399796 and 125399805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125399849) 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 7 ways as a sum of consecutive naturals, for example, 73003 + ... + 74700.

It is an arithmetic number, because the mean of its divisors is an integer number (20973968).

Almost surely, 2^125399847 is an apocalyptic number.

125399847 is a deficient number, since it is larger than the sum of its proper divisors (42391897).

125399847 is a wasteful number, since it uses less digits than its factorization.

125399847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147989.

The product of its digits is 544320, while the sum is 48.

The square root of 125399847 is about 11198.2073118870. The cubic root of 125399847 is about 500.5325618876.

The spelling of 125399847 in words is "one hundred twenty-five million, three hundred ninety-nine thousand, eight hundred forty-seven".