26845184025 has 135 divisors (see below), whose sum is σ = 54823749519. Its totient is φ = 12976524000.

The previous prime is 26845184011. The next prime is 26845184027. The reversal of 26845184025 is 52048154862.

The square root of 26845184025 is 163845.

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

It can be written as a sum of positive squares in only one way, i.e., 9664266249 + 17180917776 = 98307^2 + 131076^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 26845184025 - 2²³ = 26836795417 is a prime.

It is a super-2 number, since 2×26845184025² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26845184027) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 81103110 + ... + 81103440.

Almost surely, 2^26845184025 is an apocalyptic number.

26845184025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

26845184025 is the 163845-th square number.

26845184025 is the 81923-rd centered octagonal number.

It is an amenable number.

26845184025 is an abundant number, since it is smaller than the sum of its proper divisors (27978565494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26845184025 is an equidigital number, since it uses as much as digits as its factorization.

26845184025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

The spelling of 26845184025 in words is "twenty-six billion, eight hundred forty-five million, one hundred eighty-four thousand, twenty-five".