25488540893 has 2 divisors, whose sum is σ = 25488540894. Its totient is φ = 25488540892.

The previous prime is 25488540773. The next prime is 25488540899. The reversal of 25488540893 is 39804588452.

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., 18593231449 + 6895309444 = 136357^2 + 83038^2 .

It is a cyclic number.

It is not a de Polignac number, because 25488540893 - 2¹⁸ = 25488278749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25488540899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12744270446 + 12744270447.

It is an arithmetic number, because the mean of its divisors is an integer number (12744270447).

Almost surely, 2^25488540893 is an apocalyptic number.

It is an amenable number.

25488540893 is a deficient number, since it is larger than the sum of its proper divisors (1).

25488540893 is an equidigital number, since it uses as much as digits as its factorization.

25488540893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11059200, while the sum is 56.

The spelling of 25488540893 in words is "twenty-five billion, four hundred eighty-eight million, five hundred forty thousand, eight hundred ninety-three".