2072256605 has 4 divisors (see below), whose sum is σ = 2486707932. Its totient is φ = 1657805280.

The previous prime is 2072256583. The next prime is 2072256611. The reversal of 2072256605 is 5066522702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 663680644 + 1408575961 = 25762^2 + 37531^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2072256605 is a prime.

It is a super-2 number, since 2×2072256605² = 8588494873932252050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 207225656 + ... + 207225665.

It is an arithmetic number, because the mean of its divisors is an integer number (621676983).

Almost surely, 2^2072256605 is an apocalyptic number.

It is an amenable number.

2072256605 is a deficient number, since it is larger than the sum of its proper divisors (414451327).

2072256605 is an equidigital number, since it uses as much as digits as its factorization.

2072256605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414451326.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 2072256605 is about 45522.0452638060. The cubic root of 2072256605 is about 1274.9148434731.

The spelling of 2072256605 in words is "two billion, seventy-two million, two hundred fifty-six thousand, six hundred five".