26550431325 has 144 divisors (see below), whose sum is σ = 53489719296. Its totient is φ = 12475814400.

The previous prime is 26550431293. The next prime is 26550431329. The reversal of 26550431325 is 52313405562.

It is not a de Polignac number, because 26550431325 - 2⁵ = 26550431293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26550431325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26550431329) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 35072847 + ... + 35073603.

It is an arithmetic number, because the mean of its divisors is an integer number (371456384).

Almost surely, 2^26550431325 is an apocalyptic number.

26550431325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26550431325 is an abundant number, since it is smaller than the sum of its proper divisors (26939287971).

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

26550431325 is a wasteful number, since it uses less digits than its factorization.

26550431325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1196 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 26550431325 its reverse (52313405562), we get a palindrome (78863836887).

The spelling of 26550431325 in words is "twenty-six billion, five hundred fifty million, four hundred thirty-one thousand, three hundred twenty-five".