25025025555550 has 48 divisors (see below), whose sum is σ = 46570086680832. Its totient is φ = 10004949410400.

The previous prime is 25025025555539. The next prime is 25025025555577. The reversal of 25025025555550 is 5555552052052.

It is a super-2 number, since 2×25025025555550² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25025025555550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1004726197 + ... + 1004751103.

It is an arithmetic number, because the mean of its divisors is an integer number (970210139184).

Almost surely, 2^{25025025555550} is an apocalyptic number.

25025025555550 is a deficient number, since it is larger than the sum of its proper divisors (21545061125282).

25025025555550 is a wasteful number, since it uses less digits than its factorization.

25025025555550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34273 (or 34268 counting only the distinct ones).

The product of its (nonzero) digits is 3125000, while the sum is 46.

The spelling of 25025025555550 in words is "twenty-five trillion, twenty-five billion, twenty-five million, five hundred fifty-five thousand, five hundred fifty".