1252251425 has 6 divisors (see below), whose sum is σ = 1552791798. Its totient is φ = 1001801120.

The previous prime is 1252251391. The next prime is 1252251431. The reversal of 1252251425 is 5241522521.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 16096144 + 1236155281 = 4012^2 + 35159^2 .

It is not a de Polignac number, because 1252251425 - 2⁶ = 1252251361 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 5 ways as a sum of consecutive naturals, for example, 25045004 + ... + 25045053.

It is an arithmetic number, because the mean of its divisors is an integer number (258798633).

Almost surely, 2^1252251425 is an apocalyptic number.

It is an amenable number.

1252251425 is a deficient number, since it is larger than the sum of its proper divisors (300540373).

1252251425 is an equidigital number, since it uses as much as digits as its factorization.

1252251425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50090067 (or 50090062 counting only the distinct ones).

The product of its digits is 8000, while the sum is 29.

The square root of 1252251425 is about 35387.1646928657. The cubic root of 1252251425 is about 1077.8636968640.

Adding to 1252251425 its reverse (5241522521), we get a palindrome (6493773946).

The spelling of 1252251425 in words is "one billion, two hundred fifty-two million, two hundred fifty-one thousand, four hundred twenty-five".