4265519221 has 2 divisors, whose sum is σ = 4265519222. Its totient is φ = 4265519220.

The previous prime is 4265519161. The next prime is 4265519227. The reversal of 4265519221 is 1229155624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3081471121 + 1184048100 = 55511^2 + 34410^2 .

It is a cyclic number.

It is not a de Polignac number, because 4265519221 - 2³¹ = 2118035573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4265519227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2132759610 + 2132759611.

It is an arithmetic number, because the mean of its divisors is an integer number (2132759611).

Almost surely, 2^4265519221 is an apocalyptic number.

It is an amenable number.

4265519221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4265519221 is an equidigital number, since it uses as much as digits as its factorization.

4265519221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The square root of 4265519221 is about 65310.9425823881. The cubic root of 4265519221 is about 1621.7751233603.

The spelling of 4265519221 in words is "four billion, two hundred sixty-five million, five hundred nineteen thousand, two hundred twenty-one".