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55688201725 = 5213171348313
BaseRepresentation
bin110011110111010001…
…101000010111111101
312022202000011202110211
4303313101220113331
51403022134423400
641325515232421
74011001622152
oct636721502775
9168660152424
1055688201725
11216875a1212
12a961a48711
135336369770
1429a3d78229
1516ade3cdba
hexcf74685fd

55688201725 has 12 divisors (see below), whose sum is σ = 74365168276. Its totient is φ = 41123594880.

The previous prime is 55688201713. The next prime is 55688201731. The reversal of 55688201725 is 52710288655.

It can be written as a sum of positive squares in 6 ways, for example, as 5378608921 + 50309592804 = 73339^2 + 224298^2 .

It is not a de Polignac number, because 55688201725 - 229 = 55151330813 is a prime.

It is a super-2 number, since 2×556882017252 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

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, 85673832 + ... + 85674481.

Almost surely, 255688201725 is an apocalyptic number.

It is an amenable number.

55688201725 is a deficient number, since it is larger than the sum of its proper divisors (18676966551).

55688201725 is a wasteful number, since it uses less digits than its factorization.

55688201725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171348336 (or 171348331 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 49.

The spelling of 55688201725 in words is "fifty-five billion, six hundred eighty-eight million, two hundred one thousand, seven hundred twenty-five".

Divisors: 1 5 13 25 65 325 171348313 856741565 2227528069 4283707825 11137640345 55688201725