825972479 has 4 divisors (see below), whose sum is σ = 826304976. Its totient is φ = 825639984.

The previous prime is 825972473. The next prime is 825972491. The reversal of 825972479 is 974279528.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 825972479 - 2¹² = 825968383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 825972479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825972473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162494 + ... + 167499.

It is an arithmetic number, because the mean of its divisors is an integer number (206576244).

Almost surely, 2^825972479 is an apocalyptic number.

825972479 is a deficient number, since it is larger than the sum of its proper divisors (332497).

825972479 is a wasteful number, since it uses less digits than its factorization.

825972479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332496.

The product of its digits is 2540160, while the sum is 53.

The square root of 825972479 is about 28739.7369333820. The cubic root of 825972479 is about 938.2570989774.

The spelling of 825972479 in words is "eight hundred twenty-five million, nine hundred seventy-two thousand, four hundred seventy-nine".