25413539 has 2 divisors, whose sum is σ = 25413540. Its totient is φ = 25413538.

The previous prime is 25413517. The next prime is 25413593. The reversal of 25413539 is 93531452.

Together with next prime (25413593) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25413539 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25413139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12706769 + 12706770.

It is an arithmetic number, because the mean of its divisors is an integer number (12706770).

Almost surely, 2^25413539 is an apocalyptic number.

25413539 is a deficient number, since it is larger than the sum of its proper divisors (1).

25413539 is an equidigital number, since it uses as much as digits as its factorization.

25413539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 32.

The square root of 25413539 is about 5041.1842854631. The cubic root of 25413539 is about 294.0052253533.

It can be divided in two parts, 25413 and 539, that added together give a palindrome (25952).

The spelling of 25413539 in words is "twenty-five million, four hundred thirteen thousand, five hundred thirty-nine".