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25032013 = 242310331
BaseRepresentation
bin101111101111…
…1010101001101
31202002202110121
41133133111031
522402011023
62252304541
7422524426
oct137372515
952082417
1025032013
1113147a16
128472151
135255956
14347864d
1522e6d5d
hex17df54d

25032013 has 4 divisors (see below), whose sum is σ = 25044768. Its totient is φ = 25019260.

The previous prime is 25031983. The next prime is 25032031. The reversal of 25032013 is 31023052.

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.

It is a cyclic number.

It is not a de Polignac number, because 25032013 - 213 = 25023821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25032043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2743 + ... + 7588.

It is an arithmetic number, because the mean of its divisors is an integer number (6261192).

Almost surely, 225032013 is an apocalyptic number.

It is an amenable number.

25032013 is a deficient number, since it is larger than the sum of its proper divisors (12755).

25032013 is a wasteful number, since it uses less digits than its factorization.

25032013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12754.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 25032013 is about 5003.2002758235. The cubic root of 25032013 is about 292.5265293589.

Adding to 25032013 its reverse (31023052), we get a palindrome (56055065).

The spelling of 25032013 in words is "twenty-five million, thirty-two thousand, thirteen".

Divisors: 1 2423 10331 25032013