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1225450 = 25224509
BaseRepresentation
bin100101011001011101010
32022021000001
410223023222
5303203300
642133214
713262512
oct4531352
92267001
101225450
11767776
124b120a
1333ba25
1423c842
1519316a
hex12b2ea

1225450 has 12 divisors (see below), whose sum is σ = 2279430. Its totient is φ = 490160.

The previous prime is 1225409. The next prime is 1225459. The reversal of 1225450 is 545221.

It is a Cunningham number, because it is equal to 11072+1.

It can be written as a sum of positive squares in 3 ways, for example, as 1129969 + 95481 = 1063^2 + 309^2 .

It is not an unprimeable number, because it can be changed into a prime (1225459) 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 5 ways as a sum of consecutive naturals, for example, 12205 + ... + 12304.

21225450 is an apocalyptic number.

1225450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225450 is a deficient number, since it is larger than the sum of its proper divisors (1053980).

1225450 is a wasteful number, since it uses less digits than its factorization.

1225450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24521 (or 24516 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1225450 is about 1107.0004516711. Note that the first 3 decimals coincide. The cubic root of 1225450 is about 107.0118483400.

The spelling of 1225450 in words is "one million, two hundred twenty-five thousand, four hundred fifty".

Divisors: 1 2 5 10 25 50 24509 49018 122545 245090 612725 1225450