1463565025421 has 2 divisors, whose sum is σ = 1463565025422. Its totient is φ = 1463565025420.

The previous prime is 1463565025399. The next prime is 1463565025427. The reversal of 1463565025421 is 1245205653641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1347017893321 + 116547132100 = 1160611^2 + 341390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1463565025421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1463565025427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 731782512710 + 731782512711.

It is an arithmetic number, because the mean of its divisors is an integer number (731782512711).

Almost surely, 2^{1463565025421} is an apocalyptic number.

It is an amenable number.

1463565025421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1463565025421 is an equidigital number, since it uses as much as digits as its factorization.

1463565025421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 1463565025421 in words is "one trillion, four hundred sixty-three billion, five hundred sixty-five million, twenty-five thousand, four hundred twenty-one".