25566252441 has 8 divisors (see below), whose sum is σ = 34104725664. Its totient is φ = 17035973760.

The previous prime is 25566252431. The next prime is 25566252443. The reversal of 25566252441 is 14425266552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25566252441 - 2⁶ = 25566252377 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25566252393 and 25566252402.

It is not an unprimeable number, because it can be changed into a prime (25566252443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2041351 + ... + 2053836.

It is an arithmetic number, because the mean of its divisors is an integer number (4263090708).

Almost surely, 2^25566252441 is an apocalyptic number.

It is an amenable number.

25566252441 is a deficient number, since it is larger than the sum of its proper divisors (8538473223).

25566252441 is a wasteful number, since it uses less digits than its factorization.

25566252441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097271.

The product of its digits is 576000, while the sum is 42.

The spelling of 25566252441 in words is "twenty-five billion, five hundred sixty-six million, two hundred fifty-two thousand, four hundred forty-one".