1251427016 has 16 divisors (see below), whose sum is σ = 2681629440. Its totient is φ = 536325840.

The previous prime is 1251426997. The next prime is 1251427019. The reversal of 1251427016 is 6107241521.

It is a self number, because there is not a number n which added to its sum of digits gives 1251427016.

It is not an unprimeable number, because it can be changed into a prime (1251427019) 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, 11173400 + ... + 11173511.

It is an arithmetic number, because the mean of its divisors is an integer number (167601840).

Almost surely, 2^1251427016 is an apocalyptic number.

It is an amenable number.

1251427016 is an abundant number, since it is smaller than the sum of its proper divisors (1430202424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251427016 is a wasteful number, since it uses less digits than its factorization.

1251427016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22346924 (or 22346920 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1251427016 is about 35375.5143566846. The cubic root of 1251427016 is about 1077.6271108273.

Adding to 1251427016 its reverse (6107241521), we get a palindrome (7358668537).

The spelling of 1251427016 in words is "one billion, two hundred fifty-one million, four hundred twenty-seven thousand, sixteen".