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12125245 = 511449491
BaseRepresentation
bin101110010000…
…010000111101
3211211000201011
4232100100331
511101001440
61111515221
7205030366
oct56202075
924730634
1012125245
116931970
124088b11
132687002
141878b6d
1510e79ea
hexb9043d

12125245 has 16 divisors (see below), whose sum is σ = 15940800. Its totient is φ = 8780800.

The previous prime is 12125237. The next prime is 12125251. The reversal of 12125245 is 54252121.

It is not a de Polignac number, because 12125245 - 23 = 12125237 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 24450 + ... + 24940.

It is an arithmetic number, because the mean of its divisors is an integer number (996300).

Almost surely, 212125245 is an apocalyptic number.

It is an amenable number.

12125245 is a deficient number, since it is larger than the sum of its proper divisors (3815555).

12125245 is a wasteful number, since it uses less digits than its factorization.

12125245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956.

The product of its digits is 800, while the sum is 22.

The square root of 12125245 is about 3482.1322490681. The cubic root of 12125245 is about 229.7365919562.

Adding to 12125245 its reverse (54252121), we get a palindrome (66377366).

The spelling of 12125245 in words is "twelve million, one hundred twenty-five thousand, two hundred forty-five".

Divisors: 1 5 11 55 449 491 2245 2455 4939 5401 24695 27005 220459 1102295 2425049 12125245