825255890 has 8 divisors (see below), whose sum is σ = 1485460620. Its totient is φ = 330102352.

The previous prime is 825255887. The next prime is 825255901. The reversal of 825255890 is 98552528.

It can be written as a sum of positive squares in 2 ways, for example, as 720868801 + 104387089 = 26849^2 + 10217^2 .

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

It is a Curzon 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, 41262785 + ... + 41262804.

Almost surely, 2^825255890 is an apocalyptic number.

825255890 is a deficient number, since it is larger than the sum of its proper divisors (660204730).

825255890 is a wasteful number, since it uses less digits than its factorization.

825255890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82525596.

The product of its (nonzero) digits is 288000, while the sum is 44.

The square root of 825255890 is about 28727.2673604713. The cubic root of 825255890 is about 937.9856858805.

The spelling of 825255890 in words is "eight hundred twenty-five million, two hundred fifty-five thousand, eight hundred ninety".