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80555025 = 3521074067
BaseRepresentation
bin1001100110100…
…10110000010001
312121120121201110
410303102300101
5131110230100
611554323533
71665464205
oct463226021
9177517643
1080555025
1141520201
1222b895a9
13138c5bc5
14a9acb05
157113250
hex4cd2c11

80555025 has 12 divisors (see below), whose sum is σ = 133184432. Its totient is φ = 42962640.

The previous prime is 80555017. The next prime is 80555029. The reversal of 80555025 is 52055508.

It is not a de Polignac number, because 80555025 - 23 = 80555017 is a prime.

It is a super-2 number, since 2×805550252 = 12978224105501250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80554983 and 80555001.

It is not an unprimeable number, because it can be changed into a prime (80555029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 536959 + ... + 537108.

Almost surely, 280555025 is an apocalyptic number.

It is an amenable number.

80555025 is a deficient number, since it is larger than the sum of its proper divisors (52629407).

80555025 is a wasteful number, since it uses less digits than its factorization.

80555025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074080 (or 1074075 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 80555025 is about 8975.2451220008. The cubic root of 80555025 is about 431.8811133330.

The spelling of 80555025 in words is "eighty million, five hundred fifty-five thousand, twenty-five".

Divisors: 1 3 5 15 25 75 1074067 3222201 5370335 16111005 26851675 80555025