1295821012548 has 72 divisors (see below), whose sum is σ = 3250600712352. Its totient is φ = 401634016256.

The previous prime is 1295821012477. The next prime is 1295821012579. The reversal of 1295821012548 is 8452101285921.

It is a junction number, because it is equal to n+sod(n) for n = 1295821012497 and 1295821012506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1963065 + ... + 2538752.

It is an arithmetic number, because the mean of its divisors is an integer number (45147232116).

Almost surely, 2^{1295821012548} is an apocalyptic number.

It is an amenable number.

1295821012548 is an abundant number, since it is smaller than the sum of its proper divisors (1954779699804).

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

1295821012548 is a wasteful number, since it uses less digits than its factorization.

1295821012548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501941 (or 4501922 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 48.

The spelling of 1295821012548 in words is "one trillion, two hundred ninety-five billion, eight hundred twenty-one million, twelve thousand, five hundred forty-eight".