252775553225 has 12 divisors (see below), whose sum is σ = 337552585356. Its totient is φ = 186665023680.

The previous prime is 252775553209. The next prime is 252775553237. The reversal of 252775553225 is 522355577252.

It can be written as a sum of positive squares in 6 ways, for example, as 25417287184 + 227358266041 = 159428^2 + 476821^2 .

It is not a de Polignac number, because 252775553225 - 2⁴ = 252775553209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388885142 + ... + 388885791.

It is an arithmetic number, because the mean of its divisors is an integer number (28129382113).

Almost surely, 2^252775553225 is an apocalyptic number.

252775553225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

252775553225 is a deficient number, since it is larger than the sum of its proper divisors (84777032131).

252775553225 is a wasteful number, since it uses less digits than its factorization.

252775553225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777770956 (or 777770951 counting only the distinct ones).

The product of its digits is 7350000, while the sum is 50.

The spelling of 252775553225 in words is "two hundred fifty-two billion, seven hundred seventy-five million, five hundred fifty-three thousand, two hundred twenty-five".