25530259 has 16 divisors (see below), whose sum is σ = 27381888. Its totient is φ = 23766912.

The previous prime is 25530257. The next prime is 25530287. The reversal of 25530259 is 95203552.

It is a cyclic number.

It is not a de Polignac number, because 25530259 - 2¹ = 25530257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25530259.

It is not an unprimeable number, because it can be changed into a prime (25530257) 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 in 15 ways as a sum of consecutive naturals, for example, 92029 + ... + 92305.

It is an arithmetic number, because the mean of its divisors is an integer number (1711368).

Almost surely, 2^25530259 is an apocalyptic number.

25530259 is a deficient number, since it is larger than the sum of its proper divisors (1851629).

25530259 is a wasteful number, since it uses less digits than its factorization.

25530259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 25530259 is about 5052.7476683484. The cubic root of 25530259 is about 294.4546431129.

The spelling of 25530259 in words is "twenty-five million, five hundred thirty thousand, two hundred fifty-nine".