25455481 has 4 divisors (see below), whose sum is σ = 25467892. Its totient is φ = 25443072.

The previous prime is 25455473. The next prime is 25455517. The reversal of 25455481 is 18455452.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 21939856 + 3515625 = 4684^2 + 1875^2 .

It is a cyclic number.

It is not a de Polignac number, because 25455481 - 2³ = 25455473 is a prime.

It is a super-2 number, since 2×25455481² = 1295963025882722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25455401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2316 + ... + 7501.

It is an arithmetic number, because the mean of its divisors is an integer number (6366973).

Almost surely, 2^25455481 is an apocalyptic number.

It is an amenable number.

25455481 is a deficient number, since it is larger than the sum of its proper divisors (12411).

25455481 is an equidigital number, since it uses as much as digits as its factorization.

25455481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12410.

The product of its digits is 32000, while the sum is 34.

The square root of 25455481 is about 5045.3425057175. The cubic root of 25455481 is about 294.1668765854.

The spelling of 25455481 in words is "twenty-five million, four hundred fifty-five thousand, four hundred eighty-one".