22155550545525 has 48 divisors (see below), whose sum is σ = 36738111467520. Its totient is φ = 11781593553600.

The previous prime is 22155550545517. The next prime is 22155550545539. The reversal of 22155550545525 is 52554505555122.

It is not a de Polignac number, because 22155550545525 - 2³ = 22155550545517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 188173824 + ... + 188291526.

It is an arithmetic number, because the mean of its divisors is an integer number (765377322240).

Almost surely, 2^{22155550545525} is an apocalyptic number.

22155550545525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22155550545525 is a deficient number, since it is larger than the sum of its proper divisors (14582560921995).

22155550545525 is a wasteful number, since it uses less digits than its factorization.

22155550545525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125066 (or 125061 counting only the distinct ones).

The product of its (nonzero) digits is 12500000, while the sum is 51.

The spelling of 22155550545525 in words is "twenty-two trillion, one hundred fifty-five billion, five hundred fifty million, five hundred forty-five thousand, five hundred twenty-five".