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12500253 = 321781701
BaseRepresentation
bin101111101011…
…110100011101
3212112002010100
4233223310131
511200002003
61123531313
7211151613
oct57536435
925462110
1012500253
117068697
124229b39
1327888cc
1419356b3
15116dba3
hexbebd1d

12500253 has 12 divisors (see below), whose sum is σ = 19118268. Its totient is φ = 7843200.

The previous prime is 12500251. The next prime is 12500263. The reversal of 12500253 is 35200521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4782969 + 7717284 = 2187^2 + 2778^2 .

It is not a de Polignac number, because 12500253 - 21 = 12500251 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40698 + ... + 41003.

It is an arithmetic number, because the mean of its divisors is an integer number (1593189).

Almost surely, 212500253 is an apocalyptic number.

It is an amenable number.

12500253 is a deficient number, since it is larger than the sum of its proper divisors (6618015).

12500253 is a wasteful number, since it uses less digits than its factorization.

12500253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81724 (or 81721 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 12500253 is about 3535.5696853548. The cubic root of 12500253 is about 232.0810074327.

Adding to 12500253 its reverse (35200521), we get a palindrome (47700774).

The spelling of 12500253 in words is "twelve million, five hundred thousand, two hundred fifty-three".

Divisors: 1 3 9 17 51 153 81701 245103 735309 1388917 4166751 12500253