825404763225 has 24 divisors (see below), whose sum is σ = 1559621953600. Its totient is φ = 377327891520.

The previous prime is 825404763217. The next prime is 825404763233. The reversal of 825404763225 is 522367404528.

It is an interprime number because it is at equal distance from previous prime (825404763217) and next prime (825404763233).

It is not a de Polignac number, because 825404763225 - 2³ = 825404763217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 786099250 + ... + 786100299.

Almost surely, 2^825404763225 is an apocalyptic number.

It is an amenable number.

825404763225 is a deficient number, since it is larger than the sum of its proper divisors (734217190375).

825404763225 is a wasteful number, since it uses less digits than its factorization.

825404763225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572199569 (or 1572199564 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 48.

The spelling of 825404763225 in words is "eight hundred twenty-five billion, four hundred four million, seven hundred sixty-three thousand, two hundred twenty-five".