25426481 has 2 divisors, whose sum is σ = 25426482. Its totient is φ = 25426480.

The previous prime is 25426451. The next prime is 25426487. The reversal of 25426481 is 18462452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25090081 + 336400 = 5009^2 + 580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25426481 is a prime.

It is a super-2 number, since 2×25426481² = 1293011872086722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25426487) 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 as a sum of consecutive naturals, namely, 12713240 + 12713241.

It is an arithmetic number, because the mean of its divisors is an integer number (12713241).

Almost surely, 2^25426481 is an apocalyptic number.

It is an amenable number.

25426481 is a deficient number, since it is larger than the sum of its proper divisors (1).

25426481 is an equidigital number, since it uses as much as digits as its factorization.

25426481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 32.

The square root of 25426481 is about 5042.4677490292. The cubic root of 25426481 is about 294.0551248695.

The spelling of 25426481 in words is "twenty-five million, four hundred twenty-six thousand, four hundred eighty-one".