266780376625 has 32 divisors (see below), whose sum is σ = 380947027968. Its totient is φ = 182722622400.

The previous prime is 266780376589. The next prime is 266780376659. The reversal of 266780376625 is 526673087662.

It is not a de Polignac number, because 266780376625 - 2⁷ = 266780376497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 266780376625.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 578479 + ... + 931771.

It is an arithmetic number, because the mean of its divisors is an integer number (11904594624).

Almost surely, 2^266780376625 is an apocalyptic number.

266780376625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266780376625 is a deficient number, since it is larger than the sum of its proper divisors (114166651343).

266780376625 is an equidigital number, since it uses as much as digits as its factorization.

266780376625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354178 (or 354168 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 58.

The spelling of 266780376625 in words is "two hundred sixty-six billion, seven hundred eighty million, three hundred seventy-six thousand, six hundred twenty-five".