25288767541 has 2 divisors, whose sum is σ = 25288767542. Its totient is φ = 25288767540.

The previous prime is 25288767479. The next prime is 25288767557. The reversal of 25288767541 is 14576788252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21939830641 + 3348936900 = 148121^2 + 57870^2 .

It is a cyclic number.

It is not a de Polignac number, because 25288767541 - 2¹¹ = 25288765493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25288767641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12644383770 + 12644383771.

It is an arithmetic number, because the mean of its divisors is an integer number (12644383771).

Almost surely, 2^25288767541 is an apocalyptic number.

It is an amenable number.

25288767541 is a deficient number, since it is larger than the sum of its proper divisors (1).

25288767541 is an equidigital number, since it uses as much as digits as its factorization.

25288767541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7526400, while the sum is 55.

The spelling of 25288767541 in words is "twenty-five billion, two hundred eighty-eight million, seven hundred sixty-seven thousand, five hundred forty-one".