5085258721 has 9 divisors (see below), whose sum is σ = 5268801811. Its totient is φ = 4907908264.

The previous prime is 5085258719. The next prime is 5085258751. The reversal of 5085258721 is 1278525805.

The square root of 5085258721 is 71311.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2666586321 + 2418672400 = 51639^2 + 49180^2 .

It is not a de Polignac number, because 5085258721 - 2¹ = 5085258719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5085258751) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2066790 + ... + 2069248.

Almost surely, 2^5085258721 is an apocalyptic number.

5085258721 is the 71311-st square number.

5085258721 is the 35656-th centered octagonal number.

It is an amenable number.

5085258721 is a deficient number, since it is larger than the sum of its proper divisors (183543090).

5085258721 is an frugal number, since it uses more digits than its factorization.

5085258721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4976 (or 2488 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 43.

The cubic root of 5085258721 is about 1719.6405776157.

The spelling of 5085258721 in words is "five billion, eighty-five million, two hundred fifty-eight thousand, seven hundred twenty-one".