26256607220 has 24 divisors (see below), whose sum is σ = 55961846304. Its totient is φ = 10345886496.

The previous prime is 26256607211. The next prime is 26256607229. The reversal of 26256607220 is 2270665262.

It is an interprime number because it is at equal distance from previous prime (26256607211) and next prime (26256607229).

It is a super-2 number, since 2×26256607220² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26256607229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9795902 + ... + 9798581.

It is an arithmetic number, because the mean of its divisors is an integer number (2331743596).

Almost surely, 2^26256607220 is an apocalyptic number.

26256607220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26256607220 is an abundant number, since it is smaller than the sum of its proper divisors (29705239084).

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

26256607220 is a wasteful number, since it uses less digits than its factorization.

26256607220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19594559 (or 19594557 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 26256607220 in words is "twenty-six billion, two hundred fifty-six million, six hundred seven thousand, two hundred twenty".