220505424255525 has 24 divisors (see below), whose sum is σ = 364587033775680. Its totient is φ = 117597065299840.

The previous prime is 220505424255469. The next prime is 220505424255541. The reversal of 220505424255525 is 525552424505022.

It is not a de Polignac number, because 220505424255525 - 2⁹ = 220505424255013 is a prime.

It is a super-2 number, since 2×220505424255525² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71321640 + ... + 74349089.

It is an arithmetic number, because the mean of its divisors is an integer number (15191126407320).

Almost surely, 2^{220505424255525} is an apocalyptic number.

220505424255525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220505424255525 is a deficient number, since it is larger than the sum of its proper divisors (144081609520155).

220505424255525 is a wasteful number, since it uses less digits than its factorization.

220505424255525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145690925 (or 145690920 counting only the distinct ones).

The product of its (nonzero) digits is 8000000, while the sum is 48.

The spelling of 220505424255525 in words is "two hundred twenty trillion, five hundred five billion, four hundred twenty-four million, two hundred fifty-five thousand, five hundred twenty-five".