125192805 has 16 divisors (see below), whose sum is σ = 210851520. Its totient is φ = 63255168.

The previous prime is 125192791. The next prime is 125192827. The reversal of 125192805 is 508291521.

It is not a de Polignac number, because 125192805 - 2⁴ = 125192789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219352 + ... + 219921.

It is an arithmetic number, because the mean of its divisors is an integer number (13178220).

Almost surely, 2^125192805 is an apocalyptic number.

125192805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125192805 is a deficient number, since it is larger than the sum of its proper divisors (85658715).

125192805 is a wasteful number, since it uses less digits than its factorization.

125192805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439300.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 125192805 is about 11188.9590668659. The cubic root of 125192805 is about 500.2569412731.

The spelling of 125192805 in words is "one hundred twenty-five million, one hundred ninety-two thousand, eight hundred five".