26666363125 has 20 divisors (see below), whose sum is σ = 33372326812. Its totient is φ = 21301056000.

The previous prime is 26666363123. The next prime is 26666363137. The reversal of 26666363125 is 52136366662.

It can be written as a sum of positive squares in 10 ways, for example, as 23538310084 + 3128053041 = 153422^2 + 55929^2 .

It is not a de Polignac number, because 26666363125 - 2¹ = 26666363123 is a prime.

It is a super-2 number, since 2×26666363125² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26666363123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 388927 + ... + 452323.

Almost surely, 2^26666363125 is an apocalyptic number.

26666363125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26666363125 is a deficient number, since it is larger than the sum of its proper divisors (6705963687).

26666363125 is an frugal number, since it uses more digits than its factorization.

26666363125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64090 (or 64075 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 46.

The spelling of 26666363125 in words is "twenty-six billion, six hundred sixty-six million, three hundred sixty-three thousand, one hundred twenty-five".