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80230925 = 5215720441
BaseRepresentation
bin1001100100000…
…11101000001101
312120222011010202
410302003220031
5131014342200
611543343245
71662644255
oct462035015
9176864122
1080230925
1141319755
1222a51b25
1313811528
14a926965
15709c1d5
hex4c83a0d

80230925 has 12 divisors (see below), whose sum is σ = 100124916. Its totient is φ = 63772800.

The previous prime is 80230879. The next prime is 80230949. The reversal of 80230925 is 52903208.

It can be written as a sum of positive squares in 6 ways, for example, as 289444 + 79941481 = 538^2 + 8941^2 .

It is not a de Polignac number, because 80230925 - 210 = 80229901 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6296 + ... + 14145.

It is an arithmetic number, because the mean of its divisors is an integer number (8343743).

Almost surely, 280230925 is an apocalyptic number.

It is an amenable number.

80230925 is a deficient number, since it is larger than the sum of its proper divisors (19893991).

80230925 is a wasteful number, since it uses less digits than its factorization.

80230925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20608 (or 20603 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 80230925 is about 8957.1717076318. The cubic root of 80230925 is about 431.3011337533.

The spelling of 80230925 in words is "eighty million, two hundred thirty thousand, nine hundred twenty-five".

Divisors: 1 5 25 157 785 3925 20441 102205 511025 3209237 16046185 80230925