125047811 has 8 divisors (see below), whose sum is σ = 143080704. Its totient is φ = 107057160.

The previous prime is 125047807. The next prime is 125047817. The reversal of 125047811 is 118740521.

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

It is not a de Polignac number, because 125047811 - 2² = 125047807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125047817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3935 + ... + 16296.

It is an arithmetic number, because the mean of its divisors is an integer number (17885088).

Almost surely, 2^125047811 is an apocalyptic number.

125047811 is a deficient number, since it is larger than the sum of its proper divisors (18032893).

125047811 is an equidigital number, since it uses as much as digits as its factorization.

125047811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21121.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 125047811 is about 11182.4778560031. The cubic root of 125047811 is about 500.0637398741.

The spelling of 125047811 in words is "one hundred twenty-five million, forty-seven thousand, eight hundred eleven".