125047777 has 4 divisors (see below), whose sum is σ = 127708416. Its totient is φ = 122387140.

The previous prime is 125047771. The next prime is 125047787. The reversal of 125047777 is 777740521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125047777 - 2⁷ = 125047649 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125047771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1330249 + ... + 1330342.

It is an arithmetic number, because the mean of its divisors is an integer number (31927104).

Almost surely, 2^125047777 is an apocalyptic number.

It is an amenable number.

125047777 is a deficient number, since it is larger than the sum of its proper divisors (2660639).

125047777 is an equidigital number, since it uses as much as digits as its factorization.

125047777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660638.

The product of its (nonzero) digits is 96040, while the sum is 40.

The square root of 125047777 is about 11182.4763357675. The cubic root of 125047777 is about 500.0636945523.

The spelling of 125047777 in words is "one hundred twenty-five million, forty-seven thousand, seven hundred seventy-seven".