491736525 has 48 divisors (see below), whose sum is σ = 933273600. Its totient is φ = 223796160.

The previous prime is 491736521. The next prime is 491736529. The reversal of 491736525 is 525637194.

It is an interprime number because it is at equal distance from previous prime (491736521) and next prime (491736529).

It is not a de Polignac number, because 491736525 - 2² = 491736521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491736521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123516 + ... + 127434.

It is an arithmetic number, because the mean of its divisors is an integer number (19443200).

Almost surely, 2^491736525 is an apocalyptic number.

It is an amenable number.

491736525 is a deficient number, since it is larger than the sum of its proper divisors (441537075).

491736525 is a wasteful number, since it uses less digits than its factorization.

491736525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178 (or 4173 counting only the distinct ones).

The product of its digits is 226800, while the sum is 42.

The square root of 491736525 is about 22175.1330322954. The cubic root of 491736525 is about 789.3037314455.

The spelling of 491736525 in words is "four hundred ninety-one million, seven hundred thirty-six thousand, five hundred twenty-five".