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80803525 = 5211293831
BaseRepresentation
bin1001101000011…
…11011011000101
312122001020121011
410310033123011
5131141203100
612003522221
72000550535
oct464173305
9178036534
1080803525
114167a980
1223089371
131398204a
14aa354c5
157161bba
hex4d0f6c5

80803525 has 12 divisors (see below), whose sum is σ = 109305504. Its totient is φ = 58766000.

The previous prime is 80803519. The next prime is 80803537. The reversal of 80803525 is 52530808.

It is not a de Polignac number, because 80803525 - 29 = 80803013 is a prime.

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, 146641 + ... + 147190.

It is an arithmetic number, because the mean of its divisors is an integer number (9108792).

Almost surely, 280803525 is an apocalyptic number.

It is an amenable number.

80803525 is a deficient number, since it is larger than the sum of its proper divisors (28501979).

80803525 is a wasteful number, since it uses less digits than its factorization.

80803525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293852 (or 293847 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 80803525 is about 8989.0780951108. The cubic root of 80803525 is about 432.3247533070.

The spelling of 80803525 in words is "eighty million, eight hundred three thousand, five hundred twenty-five".

Divisors: 1 5 11 25 55 275 293831 1469155 3232141 7345775 16160705 80803525