491833725 has 24 divisors (see below), whose sum is σ = 848523072. Its totient is φ = 250905600.

The previous prime is 491833717. The next prime is 491833729. The reversal of 491833725 is 527338194.

It is not a de Polignac number, because 491833725 - 2³ = 491833717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491833729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140836 + ... + 144285.

It is an arithmetic number, because the mean of its divisors is an integer number (35355128).

Almost surely, 2^491833725 is an apocalyptic number.

It is an amenable number.

491833725 is a deficient number, since it is larger than the sum of its proper divisors (356689347).

491833725 is a wasteful number, since it uses less digits than its factorization.

491833725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285157 (or 285152 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 491833725 is about 22177.3245681259. The cubic root of 491833725 is about 789.3557344081.

The spelling of 491833725 in words is "four hundred ninety-one million, eight hundred thirty-three thousand, seven hundred twenty-five".