25543275419 has 2 divisors, whose sum is σ = 25543275420. Its totient is φ = 25543275418.

The previous prime is 25543275403. The next prime is 25543275427. The reversal of 25543275419 is 91457234552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25543275419 - 2⁴ = 25543275403 is a prime.

It is a super-2 number, since 2×25543275419² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25543275469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12771637709 + 12771637710.

It is an arithmetic number, because the mean of its divisors is an integer number (12771637710).

Almost surely, 2^25543275419 is an apocalyptic number.

25543275419 is a deficient number, since it is larger than the sum of its proper divisors (1).

25543275419 is an equidigital number, since it uses as much as digits as its factorization.

25543275419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512000, while the sum is 47.

The spelling of 25543275419 in words is "twenty-five billion, five hundred forty-three million, two hundred seventy-five thousand, four hundred nineteen".