26012851225 has 9 divisors (see below), whose sum is σ = 32256935517. Its totient is φ = 20809635840.

The previous prime is 26012851219. The next prime is 26012851229. The reversal of 26012851225 is 52215821062.

The square root of 26012851225 is 161285.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3822577929 + 22190273296 = 61827^2 + 148964^2 .

It is not a de Polignac number, because 26012851225 - 2³ = 26012851217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26012851229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 790297 + ... + 822553.

Almost surely, 2^26012851225 is an apocalyptic number.

26012851225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

26012851225 is the 161285-th square number.

26012851225 is the 80643-rd centered octagonal number.

It is an amenable number.

26012851225 is a deficient number, since it is larger than the sum of its proper divisors (6244084292).

26012851225 is an frugal number, since it uses more digits than its factorization.

26012851225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64524 (or 32262 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The spelling of 26012851225 in words is "twenty-six billion, twelve million, eight hundred fifty-one thousand, two hundred twenty-five".