25576063243 has 4 divisors (see below), whose sum is σ = 26058630528. Its totient is φ = 25093495960.

The previous prime is 25576063237. The next prime is 25576063283. The reversal of 25576063243 is 34236067552.

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 25576063243 - 2¹⁷ = 25575932171 is a prime.

It is a super-2 number, since 2×25576063243² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25576063243.

It is not an unprimeable number, because it can be changed into a prime (25576063283) 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, 241283563 + ... + 241283668.

It is an arithmetic number, because the mean of its divisors is an integer number (6514657632).

Almost surely, 2^25576063243 is an apocalyptic number.

25576063243 is a deficient number, since it is larger than the sum of its proper divisors (482567285).

25576063243 is an equidigital number, since it uses as much as digits as its factorization.

25576063243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482567284.

The product of its (nonzero) digits is 907200, while the sum is 43.

The spelling of 25576063243 in words is "twenty-five billion, five hundred seventy-six million, sixty-three thousand, two hundred forty-three".