25312421441 has 2 divisors, whose sum is σ = 25312421442. Its totient is φ = 25312421440.

The previous prime is 25312421383. The next prime is 25312421461. The reversal of 25312421441 is 14412421352.

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., 25234911025 + 77510416 = 158855^2 + 8804^2 .

It is a cyclic number.

It is not a de Polignac number, because 25312421441 - 2¹⁴ = 25312405057 is a prime.

It is not a weakly prime, because it can be changed into another prime (25312421461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12656210720 + 12656210721.

It is an arithmetic number, because the mean of its divisors is an integer number (12656210721).

Almost surely, 2^25312421441 is an apocalyptic number.

It is an amenable number.

25312421441 is a deficient number, since it is larger than the sum of its proper divisors (1).

25312421441 is an equidigital number, since it uses as much as digits as its factorization.

25312421441 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.

Adding to 25312421441 its reverse (14412421352), we get a palindrome (39724842793).

The spelling of 25312421441 in words is "twenty-five billion, three hundred twelve million, four hundred twenty-one thousand, four hundred forty-one".