25315441 has 2 divisors, whose sum is σ = 25315442. Its totient is φ = 25315440.

The previous prime is 25315439. The next prime is 25315447. The reversal of 25315441 is 14451352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22287841 + 3027600 = 4721^2 + 1740^2 .

It is a cyclic number.

It is not a de Polignac number, because 25315441 - 2¹ = 25315439 is a prime.

It is a super-3 number, since 3×25315441³ (a number of 23 digits) contains 333 as substring.

Together with 25315439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25315447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12657720 + 12657721.

It is an arithmetic number, because the mean of its divisors is an integer number (12657721).

Almost surely, 2^25315441 is an apocalyptic number.

It is an amenable number.

25315441 is a deficient number, since it is larger than the sum of its proper divisors (1).

25315441 is an equidigital number, since it uses as much as digits as its factorization.

25315441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 25315441 is about 5031.4452198151. The cubic root of 25315441 is about 293.6264441295.

Adding to 25315441 its reverse (14451352), we get a palindrome (39766793).

The spelling of 25315441 in words is "twenty-five million, three hundred fifteen thousand, four hundred forty-one".