25105055250550 has 24 divisors (see below), whose sum is σ = 50940439382232. Its totient is φ = 9129111000000.

The previous prime is 25105055250523. The next prime is 25105055250629. The reversal of 25105055250550 is 5505255050152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22822776951 + ... + 22822778050.

It is an arithmetic number, because the mean of its divisors is an integer number (2122518307593).

Almost surely, 2^{25105055250550} is an apocalyptic number.

25105055250550 is an abundant number, since it is smaller than the sum of its proper divisors (25835384131682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25105055250550 is a wasteful number, since it uses less digits than its factorization.

25105055250550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45645555024 (or 45645555019 counting only the distinct ones).

The product of its (nonzero) digits is 312500, while the sum is 40.

The spelling of 25105055250550 in words is "twenty-five trillion, one hundred five billion, fifty-five million, two hundred fifty thousand, five hundred fifty".