825181055 has 4 divisors (see below), whose sum is σ = 990217272. Its totient is φ = 660144840.

The previous prime is 825181043. The next prime is 825181069. The reversal of 825181055 is 550181528.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 825181055 - 2¹² = 825176959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82518101 + ... + 82518110.

It is an arithmetic number, because the mean of its divisors is an integer number (247554318).

Almost surely, 2^825181055 is an apocalyptic number.

825181055 is a deficient number, since it is larger than the sum of its proper divisors (165036217).

825181055 is a wasteful number, since it uses less digits than its factorization.

825181055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165036216.

The product of its (nonzero) digits is 16000, while the sum is 35.

The square root of 825181055 is about 28725.9648227871. The cubic root of 825181055 is about 937.9573325412.

The spelling of 825181055 in words is "eight hundred twenty-five million, one hundred eighty-one thousand, fifty-five".