4200525221 has 2 divisors, whose sum is σ = 4200525222. Its totient is φ = 4200525220.

The previous prime is 4200525181. The next prime is 4200525239. The reversal of 4200525221 is 1225250024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2320348900 + 1880176321 = 48170^2 + 43361^2 .

It is a cyclic number.

It is not a de Polignac number, because 4200525221 - 2²² = 4196330917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4200525281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2100262610 + 2100262611.

It is an arithmetic number, because the mean of its divisors is an integer number (2100262611).

Almost surely, 2^4200525221 is an apocalyptic number.

It is an amenable number.

4200525221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4200525221 is an equidigital number, since it uses as much as digits as its factorization.

4200525221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 4200525221 is about 64811.4590253915. The cubic root of 4200525221 is about 1613.4958977139.

Adding to 4200525221 its reverse (1225250024), we get a palindrome (5425775245).

The spelling of 4200525221 in words is "four billion, two hundred million, five hundred twenty-five thousand, two hundred twenty-one".