25527527489 has 2 divisors, whose sum is σ = 25527527490. Its totient is φ = 25527527488.

The previous prime is 25527527483. The next prime is 25527527507. The reversal of 25527527489 is 98472572552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17103408400 + 8424119089 = 130780^2 + 91783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25527527489 is a prime.

It is not a weakly prime, because it can be changed into another prime (25527527483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12763763744 + 12763763745.

It is an arithmetic number, because the mean of its divisors is an integer number (12763763745).

Almost surely, 2^25527527489 is an apocalyptic number.

It is an amenable number.

25527527489 is a deficient number, since it is larger than the sum of its proper divisors (1).

25527527489 is an equidigital number, since it uses as much as digits as its factorization.

25527527489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112000, while the sum is 56.

The spelling of 25527527489 in words is "twenty-five billion, five hundred twenty-seven million, five hundred twenty-seven thousand, four hundred eighty-nine".