1252005425 has 24 divisors (see below), whose sum is σ = 1701727392. Its totient is φ = 906192000.

The previous prime is 1252005421. The next prime is 1252005427. The reversal of 1252005425 is 5245002521.

It is not a de Polignac number, because 1252005425 - 2² = 1252005421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1252005394 and 1252005403.

It is not an unprimeable number, because it can be changed into a prime (1252005421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47237 + ... + 68813.

It is an arithmetic number, because the mean of its divisors is an integer number (70905308).

Almost surely, 2^1252005425 is an apocalyptic number.

It is an amenable number.

1252005425 is a deficient number, since it is larger than the sum of its proper divisors (449721967).

1252005425 is a wasteful number, since it uses less digits than its factorization.

1252005425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21809 (or 21804 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 1252005425 is about 35383.6886856077. The cubic root of 1252005425 is about 1077.7931115090.

Adding to 1252005425 its reverse (5245002521), we get a palindrome (6497007946).

The spelling of 1252005425 in words is "one billion, two hundred fifty-two million, five thousand, four hundred twenty-five".