25513441 has 2 divisors, whose sum is σ = 25513442. Its totient is φ = 25513440.

The previous prime is 25513393. The next prime is 25513451. The reversal of 25513441 is 14431552.

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., 20205025 + 5308416 = 4495^2 + 2304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25513441 is a prime.

It is not a weakly prime, because it can be changed into another prime (25513451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12756720 + 12756721.

It is an arithmetic number, because the mean of its divisors is an integer number (12756721).

Almost surely, 2^25513441 is an apocalyptic number.

It is an amenable number.

25513441 is a deficient number, since it is larger than the sum of its proper divisors (1).

25513441 is an equidigital number, since it uses as much as digits as its factorization.

25513441 is an evil number, because the sum of its binary digits is even.

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

The square root of 25513441 is about 5051.0831511667. The cubic root of 25513441 is about 294.3899718015.

Adding to 25513441 its reverse (14431552), we get a palindrome (39944993).

The spelling of 25513441 in words is "twenty-five million, five hundred thirteen thousand, four hundred forty-one".