1251445325 has 24 divisors (see below), whose sum is σ = 1678621728. Its totient is φ = 920018880.

The previous prime is 1251445313. The next prime is 1251445331. The reversal of 1251445325 is 5235441521.

It is not a de Polignac number, because 1251445325 - 2¹² = 1251441229 is a prime.

It is a super-2 number, since 2×1251445325² = 3132230802928711250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1251445291 and 1251445300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65294 + ... + 82256.

It is an arithmetic number, because the mean of its divisors is an integer number (69942572).

Almost surely, 2^1251445325 is an apocalyptic number.

It is an amenable number.

1251445325 is a deficient number, since it is larger than the sum of its proper divisors (427176403).

1251445325 is a wasteful number, since it uses less digits than its factorization.

1251445325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17213 (or 17208 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The square root of 1251445325 is about 35375.7731364277. The cubic root of 1251445325 is about 1077.6323662087.

Adding to 1251445325 its reverse (5235441521), we get a palindrome (6486886846).

The spelling of 1251445325 in words is "one billion, two hundred fifty-one million, four hundred forty-five thousand, three hundred twenty-five".