825638460 has 24 divisors (see below), whose sum is σ = 2311787856. Its totient is φ = 220170240.

The previous prime is 825638449. The next prime is 825638491. The reversal of 825638460 is 64836528.

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, 6880261 + ... + 6880380.

It is an arithmetic number, because the mean of its divisors is an integer number (96324494).

Almost surely, 2^825638460 is an apocalyptic number.

It is an amenable number.

825638460 is an abundant number, since it is smaller than the sum of its proper divisors (1486149396).

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

825638460 is a wasteful number, since it uses less digits than its factorization.

825638460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13760653 (or 13760651 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 825638460 is about 28733.9252452567. The cubic root of 825638460 is about 938.1306064849.

The spelling of 825638460 in words is "eight hundred twenty-five million, six hundred thirty-eight thousand, four hundred sixty".