825693940 has 24 divisors (see below), whose sum is σ = 1753443720. Its totient is φ = 326565888.

The previous prime is 825693937. The next prime is 825693989. The reversal of 825693940 is 49396528.

It can be written as a sum of positive squares in 4 ways, for example, as 23444964 + 802248976 = 4842^2 + 28324^2 .

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, 230157 + ... + 233716.

It is an arithmetic number, because the mean of its divisors is an integer number (73060155).

Almost surely, 2^825693940 is an apocalyptic number.

It is an amenable number.

825693940 is an abundant number, since it is smaller than the sum of its proper divisors (927749780).

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

825693940 is a wasteful number, since it uses less digits than its factorization.

825693940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463971 (or 463969 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 825693940 is about 28734.8906383859. The cubic root of 825693940 is about 938.1516190398.

The spelling of 825693940 in words is "eight hundred twenty-five million, six hundred ninety-three thousand, nine hundred forty".