25335539 has 2 divisors, whose sum is σ = 25335540. Its totient is φ = 25335538.

The previous prime is 25335533. The next prime is 25335553. The reversal of 25335539 is 93553352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25335539 - 2²⁰ = 24286963 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 25335499 and 25335508.

It is not a weakly prime, because it can be changed into another prime (25335533) 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, 12667769 + 12667770.

It is an arithmetic number, because the mean of its divisors is an integer number (12667770).

Almost surely, 2^25335539 is an apocalyptic number.

25335539 is a deficient number, since it is larger than the sum of its proper divisors (1).

25335539 is an equidigital number, since it uses as much as digits as its factorization.

25335539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60750, while the sum is 35.

The square root of 25335539 is about 5033.4420628433. The cubic root of 25335539 is about 293.7041271962.

The spelling of 25335539 in words is "twenty-five million, three hundred thirty-five thousand, five hundred thirty-nine".