52780225 has 9 divisors (see below), whose sum is σ = 65492553. Its totient is φ = 42195120.

The previous prime is 52780213. The next prime is 52780229. The reversal of 52780225 is 52208725.

The square root of 52780225 is 7265.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 11512449 + 41267776 = 3393^2 + 6424^2 .

It is not a de Polignac number, because 52780225 - 2¹¹ = 52778177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52780229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 35599 + ... + 37051.

Almost surely, 2^52780225 is an apocalyptic number.

52780225 is the 7265-th square number.

52780225 is the 3633-rd centered octagonal number.

It is an amenable number.

52780225 is a deficient number, since it is larger than the sum of its proper divisors (12712328).

52780225 is an frugal number, since it uses more digits than its factorization.

52780225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916 (or 1458 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The cubic root of 52780225 is about 375.1086499989.

The spelling of 52780225 in words is "fifty-two million, seven hundred eighty thousand, two hundred twenty-five".