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12501253 = 71917387
BaseRepresentation
bin101111101100…
…000100000101
3212112010111101
4233230010011
511200020003
61123540101
7211154542
oct57540405
925463441
1012501253
117069416
12422a631
1327891bb
141935bc9
15116e11d
hexbec105

12501253 has 4 divisors (see below), whose sum is σ = 12519360. Its totient is φ = 12483148.

The previous prime is 12501193. The next prime is 12501257. The reversal of 12501253 is 35210521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35210521 = 50516971.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12501253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12501253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501257) 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 3 ways as a sum of consecutive naturals, for example, 7975 + ... + 9412.

It is an arithmetic number, because the mean of its divisors is an integer number (3129840).

Almost surely, 212501253 is an apocalyptic number.

It is an amenable number.

12501253 is a deficient number, since it is larger than the sum of its proper divisors (18107).

12501253 is an equidigital number, since it uses as much as digits as its factorization.

12501253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18106.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 12501253 is about 3535.7111024517. The cubic root of 12501253 is about 232.0871959693.

Adding to 12501253 its reverse (35210521), we get a palindrome (47711774).

The spelling of 12501253 in words is "twelve million, five hundred one thousand, two hundred fifty-three".

Divisors: 1 719 17387 12501253