25275055543 has 2 divisors, whose sum is σ = 25275055544. Its totient is φ = 25275055542.

The previous prime is 25275055517. The next prime is 25275055591. The reversal of 25275055543 is 34555057252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25275055543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25275055543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25275055513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12637527771 + 12637527772.

It is an arithmetic number, because the mean of its divisors is an integer number (12637527772).

Almost surely, 2^25275055543 is an apocalyptic number.

25275055543 is a deficient number, since it is larger than the sum of its proper divisors (1).

25275055543 is an equidigital number, since it uses as much as digits as its factorization.

25275055543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050000, while the sum is 43.

The spelling of 25275055543 in words is "twenty-five billion, two hundred seventy-five million, fifty-five thousand, five hundred forty-three".