25013321441 has 2 divisors, whose sum is σ = 25013321442. Its totient is φ = 25013321440.

The previous prime is 25013321279. The next prime is 25013321461. The reversal of 25013321441 is 14412331052.

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., 23983168225 + 1030153216 = 154865^2 + 32096^2 .

It is a cyclic number.

It is not a de Polignac number, because 25013321441 - 2³⁰ = 23939579617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25013321441.

It is not a weakly prime, because it can be changed into another prime (25013321461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12506660720 + 12506660721.

It is an arithmetic number, because the mean of its divisors is an integer number (12506660721).

Almost surely, 2^25013321441 is an apocalyptic number.

It is an amenable number.

25013321441 is a deficient number, since it is larger than the sum of its proper divisors (1).

25013321441 is an equidigital number, since it uses as much as digits as its factorization.

25013321441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 25013321441 its reverse (14412331052), we get a palindrome (39425652493).

The spelling of 25013321441 in words is "twenty-five billion, thirteen million, three hundred twenty-one thousand, four hundred forty-one".