825105055 has 4 divisors (see below), whose sum is σ = 990126072. Its totient is φ = 660084040.

The previous prime is 825105053. The next prime is 825105079. The reversal of 825105055 is 550501528.

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

It is not a de Polignac number, because 825105055 - 2¹ = 825105053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825105053) 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, 82510501 + ... + 82510510.

It is an arithmetic number, because the mean of its divisors is an integer number (247531518).

Almost surely, 2^825105055 is an apocalyptic number.

825105055 is a deficient number, since it is larger than the sum of its proper divisors (165021017).

825105055 is a wasteful number, since it uses less digits than its factorization.

825105055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165021016.

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 825105055 is about 28724.6419472898. The cubic root of 825105055 is about 937.9285360545.

The spelling of 825105055 in words is "eight hundred twenty-five million, one hundred five thousand, fifty-five".