25815359 has 2 divisors, whose sum is σ = 25815360. Its totient is φ = 25815358.

The previous prime is 25815341. The next prime is 25815371. The reversal of 25815359 is 95351852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25815359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25815379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12907679 + 12907680.

It is an arithmetic number, because the mean of its divisors is an integer number (12907680).

Almost surely, 2^25815359 is an apocalyptic number.

25815359 is a deficient number, since it is larger than the sum of its proper divisors (1).

25815359 is an equidigital number, since it uses as much as digits as its factorization.

25815359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 38.

The square root of 25815359 is about 5080.8817148208. The cubic root of 25815359 is about 295.5466604055.

The spelling of 25815359 in words is "twenty-five million, eight hundred fifteen thousand, three hundred fifty-nine".