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1225525 = 52747149
BaseRepresentation
bin100101011001100110101
32022021002211
410223030311
5303204100
642133421
713262650
oct4531465
92267084
101225525
11767834
124b1271
1333ba82
1423c897
151931ba
hex12b335

1225525 has 24 divisors (see below), whose sum is σ = 1785600. Its totient is φ = 816960.

The previous prime is 1225517. The next prime is 1225529. The reversal of 1225525 is 5255221.

It is not a de Polignac number, because 1225525 - 23 = 1225517 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1225496 and 1225505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225529) 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 23 ways as a sum of consecutive naturals, for example, 8151 + ... + 8299.

It is an arithmetic number, because the mean of its divisors is an integer number (74400).

21225525 is an apocalyptic number.

It is an amenable number.

1225525 is a deficient number, since it is larger than the sum of its proper divisors (560075).

1225525 is a wasteful number, since it uses less digits than its factorization.

1225525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 208 counting only the distinct ones).

The product of its digits is 1000, while the sum is 22.

The square root of 1225525 is about 1107.0343264777. The cubic root of 1225525 is about 107.0140314088.

The spelling of 1225525 in words is "one million, two hundred twenty-five thousand, five hundred twenty-five".

Divisors: 1 5 7 25 35 47 149 175 235 329 745 1043 1175 1645 3725 5215 7003 8225 26075 35015 49021 175075 245105 1225525