25543325214523 has 2 divisors, whose sum is σ = 25543325214524. Its totient is φ = 25543325214522.

The previous prime is 25543325214503. The next prime is 25543325214577. The reversal of 25543325214523 is 32541252334552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25543325214523 is a prime.

It is a super-2 number, since 2×25543325214523² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25543325214503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12771662607261 + 12771662607262.

It is an arithmetic number, because the mean of its divisors is an integer number (12771662607262).

Almost surely, 2^{25543325214523} is an apocalyptic number.

25543325214523 is a deficient number, since it is larger than the sum of its proper divisors (1).

25543325214523 is an equidigital number, since it uses as much as digits as its factorization.

25543325214523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320000, while the sum is 46.

The spelling of 25543325214523 in words is "twenty-five trillion, five hundred forty-three billion, three hundred twenty-five million, two hundred fourteen thousand, five hundred twenty-three".