25440252301 has 2 divisors, whose sum is σ = 25440252302. Its totient is φ = 25440252300.

The previous prime is 25440252281. The next prime is 25440252317. The reversal of 25440252301 is 10325204452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17358062500 + 8082189801 = 131750^2 + 89901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25440252301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25440252301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25440252601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12720126150 + 12720126151.

It is an arithmetic number, because the mean of its divisors is an integer number (12720126151).

Almost surely, 2^25440252301 is an apocalyptic number.

It is an amenable number.

25440252301 is a deficient number, since it is larger than the sum of its proper divisors (1).

25440252301 is an equidigital number, since it uses as much as digits as its factorization.

25440252301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 25440252301 its reverse (10325204452), we get a palindrome (35765456753).

The spelling of 25440252301 in words is "twenty-five billion, four hundred forty million, two hundred fifty-two thousand, three hundred one".