791225805 has 8 divisors (see below), whose sum is σ = 1265961312. Its totient is φ = 421987088.

The previous prime is 791225789. The next prime is 791225807. The reversal of 791225805 is 508522197.

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

It is a cyclic number.

It is not a de Polignac number, because 791225805 - 2⁴ = 791225789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791225807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26374179 + ... + 26374208.

It is an arithmetic number, because the mean of its divisors is an integer number (158245164).

Almost surely, 2^791225805 is an apocalyptic number.

It is an amenable number.

791225805 is a deficient number, since it is larger than the sum of its proper divisors (474735507).

791225805 is a wasteful number, since it uses less digits than its factorization.

791225805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52748395.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 791225805 is about 28128.7362851586. The cubic root of 791225805 is about 924.9114324745.

The spelling of 791225805 in words is "seven hundred ninety-one million, two hundred twenty-five thousand, eight hundred five".