1252801225 has 36 divisors (see below), whose sum is σ = 1710091812. Its totient is φ = 909792000.

The previous prime is 1252801183. The next prime is 1252801243. The reversal of 1252801225 is 5221082521.

It can be written as a sum of positive squares in 18 ways, for example, as 1203534864 + 49266361 = 34692^2 + 7019^2 .

It is not a de Polignac number, because 1252801225 - 2²¹ = 1250704073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1252801193 and 1252801202.

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, 255295 + ... + 260155.

Almost surely, 2^1252801225 is an apocalyptic number.

It is an amenable number.

1252801225 is a deficient number, since it is larger than the sum of its proper divisors (457290587).

1252801225 is a wasteful number, since it uses less digits than its factorization.

1252801225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4958 (or 4940 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 1252801225 is about 35394.9321937477. The cubic root of 1252801225 is about 1078.0214188522.

Adding to 1252801225 its reverse (5221082521), we get a palindrome (6473883746).

The spelling of 1252801225 in words is "one billion, two hundred fifty-two million, eight hundred one thousand, two hundred twenty-five".