12451202257 has 6 divisors (see below), whose sum is σ = 13482662982. Its totient is φ = 11493417312.

The previous prime is 12451202251. The next prime is 12451202273. The reversal of 12451202257 is 75220215421.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 14714896 + 12436487361 = 3836^2 + 111519^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12451202257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12451202251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36837708 + ... + 36838045.

It is an arithmetic number, because the mean of its divisors is an integer number (2247110497).

Almost surely, 2^12451202257 is an apocalyptic number.

It is an amenable number.

12451202257 is a deficient number, since it is larger than the sum of its proper divisors (1031460725).

12451202257 is an equidigital number, since it uses as much as digits as its factorization.

12451202257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73675779 (or 73675766 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

Adding to 12451202257 its reverse (75220215421), we get a palindrome (87671417678).

The spelling of 12451202257 in words is "twelve billion, four hundred fifty-one million, two hundred two thousand, two hundred fifty-seven".