782225161 has 4 divisors (see below), whose sum is σ = 786909312. Its totient is φ = 777541012.

The previous prime is 782225159. The next prime is 782225173. The reversal of 782225161 is 161522287.

It is a happy number.

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 782225161 - 2¹ = 782225159 is a prime.

It is a super-2 number, since 2×782225161² = 1223752405002951842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (782225111) 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, 2341825 + ... + 2342158.

It is an arithmetic number, because the mean of its divisors is an integer number (196727328).

Almost surely, 2^782225161 is an apocalyptic number.

It is an amenable number.

782225161 is a deficient number, since it is larger than the sum of its proper divisors (4684151).

782225161 is a wasteful number, since it uses less digits than its factorization.

782225161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684150.

The product of its digits is 13440, while the sum is 34.

The square root of 782225161 is about 27968.2884889297. The cubic root of 782225161 is about 921.3909178749.

The spelling of 782225161 in words is "seven hundred eighty-two million, two hundred twenty-five thousand, one hundred sixty-one".