26315804225 has 12 divisors (see below), whose sum is σ = 33756825660. Its totient is φ = 20326689600.

The previous prime is 26315804219. The next prime is 26315804227. The reversal of 26315804225 is 52240851362.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 881614864 + 25434189361 = 29692^2 + 159481^2 .

It is not a de Polignac number, because 26315804225 - 2⁴ = 26315804209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26315804227) 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 11 ways as a sum of consecutive naturals, for example, 18148106 + ... + 18149555.

It is an arithmetic number, because the mean of its divisors is an integer number (2813068805).

Almost surely, 2^26315804225 is an apocalyptic number.

26315804225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26315804225 is a deficient number, since it is larger than the sum of its proper divisors (7441021435).

26315804225 is a wasteful number, since it uses less digits than its factorization.

26315804225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36297700 (or 36297695 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 26315804225 in words is "twenty-six billion, three hundred fifteen million, eight hundred four thousand, two hundred twenty-five".