52722725 has 36 divisors (see below), whose sum is σ = 74461380. Its totient is φ = 36960000.

The previous prime is 52722697. The next prime is 52722731.

52722725 = 341² + 342² + ... + 582².

52722725 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 6 ways, for example, as 174724 + 52548001 = 418^2 + 7249^2 .

It is not a de Polignac number, because 52722725 - 2¹⁰ = 52721701 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 52722691 and 52722700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 87425 + ... + 88025.

Almost surely, 2^52722725 is an apocalyptic number.

52722725 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52722725 is a deficient number, since it is larger than the sum of its proper divisors (21738655).

52722725 is a wasteful number, since it uses less digits than its factorization.

52722725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 646 counting only the distinct ones).

The product of its digits is 19600, while the sum is 32.

The square root of 52722725 is about 7261.0415919481. The cubic root of 52722725 is about 374.9723831514.

It can be divided in two parts, 5272 and 2725, that added together give a palindrome (7997).

The spelling of 52722725 in words is "fifty-two million, seven hundred twenty-two thousand, seven hundred twenty-five".