1278469471325 has 6 divisors (see below), whose sum is σ = 1585302144474. Its totient is φ = 1022775577040.

The previous prime is 1278469471319. The next prime is 1278469471337. The reversal of 1278469471325 is 5231749648721.

It can be written as a sum of positive squares in 3 ways, for example, as 393594371641 + 884875099684 = 627371^2 + 940678^2 .

It is not a de Polignac number, because 1278469471325 - 2¹⁸ = 1278469209181 is a prime.

It is a super-2 number, since 2×1278469471325² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25569389402 + ... + 25569389451.

It is an arithmetic number, because the mean of its divisors is an integer number (264217024079).

Almost surely, 2^{1278469471325} is an apocalyptic number.

It is an amenable number.

1278469471325 is a deficient number, since it is larger than the sum of its proper divisors (306832673149).

1278469471325 is an equidigital number, since it uses as much as digits as its factorization.

1278469471325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51138778863 (or 51138778858 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 59.

The spelling of 1278469471325 in words is "one trillion, two hundred seventy-eight billion, four hundred sixty-nine million, four hundred seventy-one thousand, three hundred twenty-five".