1234725251 has 4 divisors (see below), whose sum is σ = 1236646152. Its totient is φ = 1232804352.

The previous prime is 1234725227. The next prime is 1234725269. The reversal of 1234725251 is 1525274321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1234725251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1234725451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 959486 + ... + 960771.

It is an arithmetic number, because the mean of its divisors is an integer number (309161538).

Almost surely, 2^1234725251 is an apocalyptic number.

1234725251 is a deficient number, since it is larger than the sum of its proper divisors (1920901).

1234725251 is an equidigital number, since it uses as much as digits as its factorization.

1234725251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920900.

The product of its digits is 16800, while the sum is 32.

The square root of 1234725251 is about 35138.6575013901. The cubic root of 1234725251 is about 1072.8115568175.

Adding to 1234725251 its reverse (1525274321), we get a palindrome (2759999572).

The spelling of 1234725251 in words is "one billion, two hundred thirty-four million, seven hundred twenty-five thousand, two hundred fifty-one".