2265005563421 has 4 divisors (see below), whose sum is σ = 2293676520000. Its totient is φ = 2236334606844.

The previous prime is 2265005563399. The next prime is 2265005563517. The reversal of 2265005563421 is 1243655005622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2265005563421 - 2¹⁸ = 2265005301277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2265005568421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14335478171 + ... + 14335478328.

It is an arithmetic number, because the mean of its divisors is an integer number (573419130000).

Almost surely, 2^{2265005563421} is an apocalyptic number.

It is an amenable number.

2265005563421 is a deficient number, since it is larger than the sum of its proper divisors (28670956579).

2265005563421 is an equidigital number, since it uses as much as digits as its factorization.

2265005563421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28670956578.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 2265005563421 in words is "two trillion, two hundred sixty-five billion, five million, five hundred sixty-three thousand, four hundred twenty-one".