2265207421 has 2 divisors, whose sum is σ = 2265207422. Its totient is φ = 2265207420.

The previous prime is 2265207403. The next prime is 2265207431. The reversal of 2265207421 is 1247025622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1994604921 + 270602500 = 44661^2 + 16450^2 .

It is a cyclic number.

It is not a de Polignac number, because 2265207421 - 2⁵ = 2265207389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2265207431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1132603710 + 1132603711.

It is an arithmetic number, because the mean of its divisors is an integer number (1132603711).

Almost surely, 2^2265207421 is an apocalyptic number.

It is an amenable number.

2265207421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2265207421 is an equidigital number, since it uses as much as digits as its factorization.

2265207421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 2265207421 is about 47594.1952447985. The cubic root of 2265207421 is about 1313.3162721135.

The spelling of 2265207421 in words is "two billion, two hundred sixty-five million, two hundred seven thousand, four hundred twenty-one".