25284507389 has 2 divisors, whose sum is σ = 25284507390. Its totient is φ = 25284507388.

The previous prime is 25284507383. The next prime is 25284507403. The reversal of 25284507389 is 98370548252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15097036900 + 10187470489 = 122870^2 + 100933^2 .

It is a cyclic number.

It is not a de Polignac number, because 25284507389 - 2²⁰ = 25283458813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25284507389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25284507383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12642253694 + 12642253695.

It is an arithmetic number, because the mean of its divisors is an integer number (12642253695).

Almost surely, 2^25284507389 is an apocalyptic number.

It is an amenable number.

25284507389 is a deficient number, since it is larger than the sum of its proper divisors (1).

25284507389 is an equidigital number, since it uses as much as digits as its factorization.

25284507389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 25284507389 in words is "twenty-five billion, two hundred eighty-four million, five hundred seven thousand, three hundred eighty-nine".