825209892 has 36 divisors (see below), whose sum is σ = 2246405980. Its totient is φ = 253910592.

The previous prime is 825209887. The next prime is 825209899. The reversal of 825209892 is 298902528.

It can be written as a sum of positive squares in 2 ways, for example, as 317338596 + 507871296 = 17814^2 + 22536^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (825209899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 881167 + ... + 882102.

Almost surely, 2^825209892 is an apocalyptic number.

It is an amenable number.

825209892 is an abundant number, since it is smaller than the sum of its proper divisors (1421196088).

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

825209892 is a wasteful number, since it uses less digits than its factorization.

825209892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763292 (or 1763287 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 825209892 is about 28726.4667510643. The cubic root of 825209892 is about 937.9682584507.

The spelling of 825209892 in words is "eight hundred twenty-five million, two hundred nine thousand, eight hundred ninety-two".