25481054243 has 4 divisors (see below), whose sum is σ = 25664371320. Its totient is φ = 25297737168.

The previous prime is 25481054233. The next prime is 25481054273. The reversal of 25481054243 is 34245018452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25481054243 - 2¹⁴ = 25481037859 is a prime.

It is a super-3 number, since 3×25481054243³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25481054197 and 25481054206.

It is not an unprimeable number, because it can be changed into a prime (25481054213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91658330 + ... + 91658607.

It is an arithmetic number, because the mean of its divisors is an integer number (6416092830).

Almost surely, 2^25481054243 is an apocalyptic number.

25481054243 is a deficient number, since it is larger than the sum of its proper divisors (183317077).

25481054243 is a wasteful number, since it uses less digits than its factorization.

25481054243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183317076.

The product of its (nonzero) digits is 153600, while the sum is 38.

The spelling of 25481054243 in words is "twenty-five billion, four hundred eighty-one million, fifty-four thousand, two hundred forty-three".