825442890 has 32 divisors (see below), whose sum is σ = 2044970496. Its totient is φ = 213017280.

The previous prime is 825442889. The next prime is 825442903. The reversal of 825442890 is 98244528.

825442890 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442857 + ... + 444716.

It is an arithmetic number, because the mean of its divisors is an integer number (63905328).

Almost surely, 2^825442890 is an apocalyptic number.

825442890 is an abundant number, since it is smaller than the sum of its proper divisors (1219527606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

825442890 is a wasteful number, since it uses less digits than its factorization.

825442890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887614.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 825442890 is about 28730.5219235572. The cubic root of 825442890 is about 938.0565285845.

The spelling of 825442890 in words is "eight hundred twenty-five million, four hundred forty-two thousand, eight hundred ninety".