825908540 has 24 divisors (see below), whose sum is σ = 1767134880. Its totient is φ = 324129728.

The previous prime is 825908539. The next prime is 825908557. The reversal of 825908540 is 45809528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388520 + ... + 390639.

It is an arithmetic number, because the mean of its divisors is an integer number (73630620).

Almost surely, 2^825908540 is an apocalyptic number.

It is an amenable number.

825908540 is an abundant number, since it is smaller than the sum of its proper divisors (941226340).

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

825908540 is a wasteful number, since it uses less digits than its factorization.

825908540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779221 (or 779219 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 825908540 is about 28738.6245321518. The cubic root of 825908540 is about 938.2328880138.

The spelling of 825908540 in words is "eight hundred twenty-five million, nine hundred eight thousand, five hundred forty".