2540685226 has 8 divisors (see below), whose sum is σ = 3813595200. Its totient is φ = 1269486828.

The previous prime is 2540685209. The next prime is 2540685239. The reversal of 2540685226 is 6225860452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2540685226² = 12910162835229342152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424176 + ... + 430123.

It is an arithmetic number, because the mean of its divisors is an integer number (476699400).

Almost surely, 2^2540685226 is an apocalyptic number.

2540685226 is a deficient number, since it is larger than the sum of its proper divisors (1272909974).

2540685226 is a wasteful number, since it uses less digits than its factorization.

2540685226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855788.

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 2540685226 is about 50405.2103060785. The cubic root of 2540685226 is about 1364.5316727618.

The spelling of 2540685226 in words is "two billion, five hundred forty million, six hundred eighty-five thousand, two hundred twenty-six".