1276401264025 has 12 divisors (see below), whose sum is σ = 1582755006844. Its totient is φ = 1021109760000.

The previous prime is 1276401264007. The next prime is 1276401264031. The reversal of 1276401264025 is 5204621046721.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 85579066521 + 1190822197504 = 292539^2 + 1091248^2 .

It is not a de Polignac number, because 1276401264025 - 2⁵ = 1276401263993 is a prime.

It is a super-3 number, since 3×1276401264025³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2619625 + ... + 3068425.

Almost surely, 2^{1276401264025} is an apocalyptic number.

It is an amenable number.

1276401264025 is a deficient number, since it is larger than the sum of its proper divisors (306353742819).

1276401264025 is a wasteful number, since it uses less digits than its factorization.

1276401264025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562572 (or 562567 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 1276401264025 in words is "one trillion, two hundred seventy-six billion, four hundred one million, two hundred sixty-four thousand, twenty-five".