25206266325550 has 48 divisors (see below), whose sum is σ = 50115296603232. Its totient is φ = 9408913817600.

The previous prime is 25206266325529. The next prime is 25206266325553. The reversal of 25206266325550 is 5552366260252.

It is a junction number, because it is equal to n+sod(n) for n = 25206266325494 and 25206266325503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25206266325553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267251539 + ... + 267345838.

It is an arithmetic number, because the mean of its divisors is an integer number (1044068679234).

Almost surely, 2^{25206266325550} is an apocalyptic number.

25206266325550 is a deficient number, since it is larger than the sum of its proper divisors (24909030277682).

25206266325550 is a wasteful number, since it uses less digits than its factorization.

25206266325550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534597453 (or 534597448 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 49.

The spelling of 25206266325550 in words is "twenty-five trillion, two hundred six billion, two hundred sixty-six million, three hundred twenty-five thousand, five hundred fifty".