25243481 has 2 divisors, whose sum is σ = 25243482. Its totient is φ = 25243480.

The previous prime is 25243429. The next prime is 25243507. The reversal of 25243481 is 18434252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24840256 + 403225 = 4984^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 25243481 - 2²² = 21049177 is a prime.

It is a super-2 number, since 2×25243481² = 1274466665994722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25243781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12621740 + 12621741.

It is an arithmetic number, because the mean of its divisors is an integer number (12621741).

Almost surely, 2^25243481 is an apocalyptic number.

It is an amenable number.

25243481 is a deficient number, since it is larger than the sum of its proper divisors (1).

25243481 is an equidigital number, since it uses as much as digits as its factorization.

25243481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 29.

The square root of 25243481 is about 5024.2891039430. The cubic root of 25243481 is about 293.3479657244.

The spelling of 25243481 in words is "twenty-five million, two hundred forty-three thousand, four hundred eighty-one".