825187797 has 32 divisors (see below), whose sum is σ = 1412870400. Its totient is φ = 466228224.

The previous prime is 825187787. The next prime is 825187799. The reversal of 825187797 is 797781528.

It is a happy number.

It is not a de Polignac number, because 825187797 - 2⁸ = 825187541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825187799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7708 + ... + 41349.

It is an arithmetic number, because the mean of its divisors is an integer number (44152200).

Almost surely, 2^825187797 is an apocalyptic number.

It is an amenable number.

825187797 is a deficient number, since it is larger than the sum of its proper divisors (587682603).

825187797 is a wasteful number, since it uses less digits than its factorization.

825187797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49162 (or 49156 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 54.

The square root of 825187797 is about 28726.0821728268. The cubic root of 825187797 is about 937.9598870073.

The spelling of 825187797 in words is "eight hundred twenty-five million, one hundred eighty-seven thousand, seven hundred ninety-seven".