25221055502352 has 80 divisors (see below), whose sum is σ = 68885702818560. Its totient is φ = 7929457681536.

The previous prime is 25221055502341. The next prime is 25221055502353. The reversal of 25221055502352 is 25320555012252.

It is a super-2 number, since 2×25221055502352² (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 25221055502352.

It is not an unprimeable number, because it can be changed into a prime (25221055502353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60706338 + ... + 61120385.

It is an arithmetic number, because the mean of its divisors is an integer number (861071285232).

Almost surely, 2^{25221055502352} is an apocalyptic number.

It is an amenable number.

25221055502352 is an abundant number, since it is smaller than the sum of its proper divisors (43664647316208).

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

25221055502352 is a wasteful number, since it uses less digits than its factorization.

25221055502352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121826980 (or 121826974 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 39.

The spelling of 25221055502352 in words is "twenty-five trillion, two hundred twenty-one billion, fifty-five million, five hundred two thousand, three hundred fifty-two".