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25125413 = 38536521
BaseRepresentation
bin101111111011…
…0001000100101
31202021111120212
41133312020211
522413003123
62254305205
7423363635
oct137661045
952244525
1025125413
1113201105
1284b8205
135289311
1434a06c5
152314878
hex17f6225

25125413 has 4 divisors (see below), whose sum is σ = 25135788. Its totient is φ = 25115040.

The previous prime is 25125383. The next prime is 25125427. The reversal of 25125413 is 31452152.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 24275329 + 850084 = 4927^2 + 922^2 .

It is a cyclic number.

It is not a de Polignac number, because 25125413 - 28 = 25125157 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 (25125433) 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, 593 + ... + 7113.

It is an arithmetic number, because the mean of its divisors is an integer number (6283947).

Almost surely, 225125413 is an apocalyptic number.

It is an amenable number.

25125413 is a deficient number, since it is larger than the sum of its proper divisors (10375).

25125413 is an equidigital number, since it uses as much as digits as its factorization.

25125413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10374.

The product of its digits is 1200, while the sum is 23.

The square root of 25125413 is about 5012.5256109071. The cubic root of 25125413 is about 292.8899049379.

Adding to 25125413 its reverse (31452152), we get a palindrome (56577565).

The spelling of 25125413 in words is "twenty-five million, one hundred twenty-five thousand, four hundred thirteen".

Divisors: 1 3853 6521 25125413