25459074481 has 9 divisors (see below), whose sum is σ = 25587202923. Its totient is φ = 25331586840.

The previous prime is 25459074467. The next prime is 25459074499. The reversal of 25459074481 is 18447095452.

The square root of 25459074481 is 159559.

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., 120802081 + 25338272400 = 10991^2 + 159180^2 .

It is not a de Polignac number, because 25459074481 - 2⁵ = 25459074449 is a prime.

It is a super-2 number, since 2×25459074481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25459074401) 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, 60472651 + ... + 60473071.

It is an arithmetic number, because the mean of its divisors is an integer number (2843022547).

Almost surely, 2^25459074481 is an apocalyptic number.

25459074481 is the 159559-th square number.

25459074481 is the 79780-th centered octagonal number.

It is an amenable number.

25459074481 is a deficient number, since it is larger than the sum of its proper divisors (128128442).

25459074481 is an frugal number, since it uses more digits than its factorization.

25459074481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

Multiplying 25459074481 by its sum of digits (49), we get a square (1247494649569 = 1116913²).

The spelling of 25459074481 in words is "twenty-five billion, four hundred fifty-nine million, seventy-four thousand, four hundred eighty-one".