2722505 has 4 divisors (see below), whose sum is σ = 3267012. Its totient is φ = 2178000.

The previous prime is 2722477. The next prime is 2722507. The reversal of 2722505 is 5052272.

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 1485961 + 1236544 = 1219^2 + 1112^2 .

It is not a de Polignac number, because 2722505 - 2⁸ = 2722249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2722507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272246 + ... + 272255.

It is an arithmetic number, because the mean of its divisors is an integer number (816753).

2^2722505 is an apocalyptic number.

It is an amenable number.

2722505 is a deficient number, since it is larger than the sum of its proper divisors (544507).

2722505 is an equidigital number, since it uses as much as digits as its factorization.

2722505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544506.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 2722505 is about 1650.0015151508. The cubic root of 2722505 is about 139.6334800639.

Adding to 2722505 its reverse (5052272), we get a palindrome (7774777).

The spelling of 2722505 in words is "two million, seven hundred twenty-two thousand, five hundred five".