1421025255563 has 8 divisors (see below), whose sum is σ = 1466921548800. Its totient is φ = 1375132510440.

The previous prime is 1421025255511. The next prime is 1421025255647. The reversal of 1421025255563 is 3655525201241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1421025255563 - 2²⁸ = 1420756820107 is a prime.

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 1421025255563.

It is not an unprimeable number, because it can be changed into a prime (1421025255163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60863 + ... + 1686936.

It is an arithmetic number, because the mean of its divisors is an integer number (183365193600).

Almost surely, 2^{1421025255563} is an apocalyptic number.

1421025255563 is a deficient number, since it is larger than the sum of its proper divisors (45896293237).

1421025255563 is a wasteful number, since it uses less digits than its factorization.

1421025255563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774057.

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 1421025255563 in words is "one trillion, four hundred twenty-one billion, twenty-five million, two hundred fifty-five thousand, five hundred sixty-three".