1276400276525 has 12 divisors (see below), whose sum is σ = 1726621465344. Its totient is φ = 928291110000.

The previous prime is 1276400276513. The next prime is 1276400276533. The reversal of 1276400276525 is 5256720046721.

It is not a de Polignac number, because 1276400276525 - 2¹² = 1276400272429 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1276400276525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2320727501 + ... + 2320728050.

It is an arithmetic number, because the mean of its divisors is an integer number (143885122112).

Almost surely, 2^{1276400276525} is an apocalyptic number.

It is an amenable number.

1276400276525 is a deficient number, since it is larger than the sum of its proper divisors (450221188819).

1276400276525 is a wasteful number, since it uses less digits than its factorization.

1276400276525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4641455572 (or 4641455567 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 1276400276525 in words is "one trillion, two hundred seventy-six billion, four hundred million, two hundred seventy-six thousand, five hundred twenty-five".