4491241755025 has 27 divisors (see below), whose sum is σ = 5702245125681. Its totient is φ = 3509079383040.

The previous prime is 4491241754999. The next prime is 4491241755043. The reversal of 4491241755025 is 5205571421944.

It is a happy number.

The square root of 4491241755025 is 2119255.

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

It can be written as a sum of positive squares in 4 ways, for example, as 330669851521 + 4160571903504 = 575039^2 + 2039748^2 .

It is not a de Polignac number, because 4491241755025 - 2¹⁹ = 4491241230737 is a prime.

It is a super-2 number, since 2×4491241755025² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4491241755025.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 455634897 + ... + 455644753.

Almost surely, 2^{4491241755025} is an apocalyptic number.

4491241755025 is the 2119255-th square number.

4491241755025 is the 1059628-th centered octagonal number.

It is an amenable number.

4491241755025 is a deficient number, since it is larger than the sum of its proper divisors (1211003370656).

4491241755025 is an frugal number, since it uses more digits than its factorization.

4491241755025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19810 (or 9905 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 49.

Multiplying 4491241755025 by its sum of digits (49), we get a square (220070845996225 = 14834785²).

The spelling of 4491241755025 in words is "four trillion, four hundred ninety-one billion, two hundred forty-one million, seven hundred fifty-five thousand, twenty-five".