825025855 has 4 divisors (see below), whose sum is σ = 990031032. Its totient is φ = 660020680.

The previous prime is 825025841. The next prime is 825025867. The reversal of 825025855 is 558520528.

It is a happy number.

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

It is not a de Polignac number, because 825025855 - 2⁵ = 825025823 is a prime.

It is a super-2 number, since 2×825025855² = 1361335322836962050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82502581 + ... + 82502590.

It is an arithmetic number, because the mean of its divisors is an integer number (247507758).

Almost surely, 2^825025855 is an apocalyptic number.

825025855 is a deficient number, since it is larger than the sum of its proper divisors (165005177).

825025855 is a wasteful number, since it uses less digits than its factorization.

825025855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165005176.

The product of its (nonzero) digits is 160000, while the sum is 40.

The square root of 825025855 is about 28723.2633069434. The cubic root of 825025855 is about 937.8985252025.

The spelling of 825025855 in words is "eight hundred twenty-five million, twenty-five thousand, eight hundred fifty-five".