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55255412125 = 533257135721
BaseRepresentation
bin110011011101011110…
…101010110110011101
312021121211210202202101
4303131132222312131
51401130341142000
641214535125101
73664165152664
oct633536526635
9167554722671
1055255412125
112148526aa61
12a860b13791
1352977b7544
1429626b9ddb
151685e4de6a
hexcdd7aad9d

55255412125 has 16 divisors (see below), whose sum is σ = 68980435056. Its totient is φ = 44190432000.

The previous prime is 55255412117. The next prime is 55255412141. The reversal of 55255412125 is 52121455255.

It can be written as a sum of positive squares in 8 ways, for example, as 28300996441 + 26954415684 = 168229^2 + 164178^2 .

It is not a de Polignac number, because 55255412125 - 23 = 55255412117 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 339265 + ... + 474985.

It is an arithmetic number, because the mean of its divisors is an integer number (4311277191).

Almost surely, 255255412125 is an apocalyptic number.

It is an amenable number.

55255412125 is a deficient number, since it is larger than the sum of its proper divisors (13725022931).

55255412125 is a wasteful number, since it uses less digits than its factorization.

55255412125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138993 (or 138983 counting only the distinct ones).

The product of its digits is 100000, while the sum is 37.

The spelling of 55255412125 in words is "fifty-five billion, two hundred fifty-five million, four hundred twelve thousand, one hundred twenty-five".

Divisors: 1 5 25 125 3257 16285 81425 135721 407125 678605 3393025 16965125 442043297 2210216485 11051082425 55255412125