825940491 has 8 divisors (see below), whose sum is σ = 1101443280. Its totient is φ = 550532352.

The previous prime is 825940463. The next prime is 825940501. The reversal of 825940491 is 194049528.

825940491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 825940491 - 2¹⁰ = 825939467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (825940411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115 + ... + 40643.

It is an arithmetic number, because the mean of its divisors is an integer number (137680410).

Almost surely, 2^825940491 is an apocalyptic number.

825940491 is a deficient number, since it is larger than the sum of its proper divisors (275502789).

825940491 is a wasteful number, since it uses less digits than its factorization.

825940491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47325.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 825940491 is about 28739.1804162888. The cubic root of 825940491 is about 938.2449866466.

The spelling of 825940491 in words is "eight hundred twenty-five million, nine hundred forty thousand, four hundred ninety-one".