25085539 has 2 divisors, whose sum is σ = 25085540. Its totient is φ = 25085538.

The previous prime is 25085509. The next prime is 25085623. The reversal of 25085539 is 93558052.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25085539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25085498 and 25085507.

It is not a weakly prime, because it can be changed into another prime (25085509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12542769 + 12542770.

It is an arithmetic number, because the mean of its divisors is an integer number (12542770).

Almost surely, 2^25085539 is an apocalyptic number.

25085539 is a deficient number, since it is larger than the sum of its proper divisors (1).

25085539 is an equidigital number, since it uses as much as digits as its factorization.

25085539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 25085539 is about 5008.5465955704. The cubic root of 25085539 is about 292.7348842616.

The spelling of 25085539 in words is "twenty-five million, eighty-five thousand, five hundred thirty-nine".