1251345425 has 12 divisors (see below), whose sum is σ = 1692729456. Its totient is φ = 910069200.

The previous prime is 1251345413. The next prime is 1251345463. The reversal of 1251345425 is 5245431521.

It is not a de Polignac number, because 1251345425 - 2⁴ = 1251345409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1251345391 and 1251345400.

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, 2274899 + ... + 2275448.

It is an arithmetic number, because the mean of its divisors is an integer number (141060788).

Almost surely, 2^1251345425 is an apocalyptic number.

It is an amenable number.

1251345425 is a deficient number, since it is larger than the sum of its proper divisors (441384031).

1251345425 is a wasteful number, since it uses less digits than its factorization.

1251345425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4550368 (or 4550363 counting only the distinct ones).

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

The square root of 1251345425 is about 35374.3611249730. The cubic root of 1251345425 is about 1077.6036904751.

Adding to 1251345425 its reverse (5245431521), we get a palindrome (6496776946).

The spelling of 1251345425 in words is "one billion, two hundred fifty-one million, three hundred forty-five thousand, four hundred twenty-five".