1251412351 has 4 divisors (see below), whose sum is σ = 1430185552. Its totient is φ = 1072639152.

The previous prime is 1251412339. The next prime is 1251412369. The reversal of 1251412351 is 1532141521.

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

It is a cyclic number.

It is not a de Polignac number, because 1251412351 - 2⁵ = 1251412319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251412391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89386590 + ... + 89386603.

It is an arithmetic number, because the mean of its divisors is an integer number (357546388).

Almost surely, 2^1251412351 is an apocalyptic number.

1251412351 is a deficient number, since it is larger than the sum of its proper divisors (178773201).

1251412351 is an equidigital number, since it uses as much as digits as its factorization.

1251412351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178773200.

The product of its digits is 1200, while the sum is 25.

The square root of 1251412351 is about 35375.3070799392. The cubic root of 1251412351 is about 1077.6229013760.

Adding to 1251412351 its reverse (1532141521), we get a palindrome (2783553872).

The spelling of 1251412351 in words is "one billion, two hundred fifty-one million, four hundred twelve thousand, three hundred fifty-one".