25284511489 has 2 divisors, whose sum is σ = 25284511490. Its totient is φ = 25284511488.

The previous prime is 25284511457. The next prime is 25284511517. The reversal of 25284511489 is 98411548252.

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., 24896106225 + 388405264 = 157785^2 + 19708^2 .

It is a cyclic number.

It is not a de Polignac number, because 25284511489 - 2⁵ = 25284511457 is a prime.

It is not a weakly prime, because it can be changed into another prime (25284511429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12642255744 + 12642255745.

It is an arithmetic number, because the mean of its divisors is an integer number (12642255745).

Almost surely, 2^25284511489 is an apocalyptic number.

It is an amenable number.

25284511489 is a deficient number, since it is larger than the sum of its proper divisors (1).

25284511489 is an equidigital number, since it uses as much as digits as its factorization.

25284511489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 921600, while the sum is 49.

The spelling of 25284511489 in words is "twenty-five billion, two hundred eighty-four million, five hundred eleven thousand, four hundred eighty-nine".