25812761226 has 16 divisors (see below), whose sum is σ = 59000597184. Its totient is φ = 7375074624.

The previous prime is 25812761197. The next prime is 25812761279. The reversal of 25812761226 is 62216721852.

It is a super-2 number, since 2×25812761226² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 614589553 = 25812761226 / (2 + 5 + 8 + 1 + 2 + 7 + 6 + 1 + 2 + 2 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307294735 + ... + 307294818.

It is an arithmetic number, because the mean of its divisors is an integer number (3687537324).

Almost surely, 2^25812761226 is an apocalyptic number.

25812761226 is an abundant number, since it is smaller than the sum of its proper divisors (33187835958).

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

25812761226 is a wasteful number, since it uses less digits than its factorization.

25812761226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614589565.

The product of its digits is 161280, while the sum is 42.

The spelling of 25812761226 in words is "twenty-five billion, eight hundred twelve million, seven hundred sixty-one thousand, two hundred twenty-six".