825780988 has 12 divisors (see below), whose sum is σ = 1445324832. Its totient is φ = 412831040.

The previous prime is 825780971. The next prime is 825781013. The reversal of 825780988 is 889087528.

It is a super-2 number, since 2×825780988² = 1363828480284512288, which contains 22 as substring.

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, 34893 + ... + 53563.

It is an arithmetic number, because the mean of its divisors is an integer number (120443736).

Almost surely, 2^825780988 is an apocalyptic number.

It is an amenable number.

825780988 is a deficient number, since it is larger than the sum of its proper divisors (619543844).

825780988 is a wasteful number, since it uses less digits than its factorization.

825780988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29732 (or 29730 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 55.

The square root of 825780988 is about 28736.4052727546. The cubic root of 825780988 is about 938.1845857960.

The spelling of 825780988 in words is "eight hundred twenty-five million, seven hundred eighty thousand, nine hundred eighty-eight".