491027725 has 6 divisors (see below), whose sum is σ = 608874410. Its totient is φ = 392822160.

The previous prime is 491027723. The next prime is 491027729. The reversal of 491027725 is 527720194.

It can be written as a sum of positive squares in 3 ways, for example, as 146071396 + 344956329 = 12086^2 + 18573^2 .

It is not a de Polignac number, because 491027725 - 2¹ = 491027723 is a prime.

It is a super-3 number, since 3×491027725³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491027723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9820530 + ... + 9820579.

Almost surely, 2^491027725 is an apocalyptic number.

It is an amenable number.

491027725 is a deficient number, since it is larger than the sum of its proper divisors (117846685).

491027725 is a wasteful number, since it uses less digits than its factorization.

491027725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19641119 (or 19641114 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 491027725 is about 22159.1454031964. The cubic root of 491027725 is about 788.9243090807.

The spelling of 491027725 in words is "four hundred ninety-one million, twenty-seven thousand, seven hundred twenty-five".