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25013441 = 229109229
BaseRepresentation
bin101111101101…
…0110011000001
31202001210222202
41133122303001
522400412231
62252042545
7422416325
oct137326301
952053882
1025013441
1113134a72
128463455
13524a36b
143471985
1522e15cb
hex17dacc1

25013441 has 4 divisors (see below), whose sum is σ = 25122900. Its totient is φ = 24903984.

The previous prime is 25013437. The next prime is 25013449. The reversal of 25013441 is 14431052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22137025 + 2876416 = 4705^2 + 1696^2 .

It is a cyclic number.

It is not a de Polignac number, because 25013441 - 22 = 25013437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25013449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54386 + ... + 54843.

It is an arithmetic number, because the mean of its divisors is an integer number (6280725).

Almost surely, 225013441 is an apocalyptic number.

It is an amenable number.

25013441 is a deficient number, since it is larger than the sum of its proper divisors (109459).

25013441 is a wasteful number, since it uses less digits than its factorization.

25013441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109458.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 25013441 is about 5001.3439193881. The cubic root of 25013441 is about 292.4541667295.

Adding to 25013441 its reverse (14431052), we get a palindrome (39444493).

The spelling of 25013441 in words is "twenty-five million, thirteen thousand, four hundred forty-one".

Divisors: 1 229 109229 25013441