4250425021 has 2 divisors, whose sum is σ = 4250425022. Its totient is φ = 4250425020.

The previous prime is 4250425019. The next prime is 4250425027. The reversal of 4250425021 is 1205240524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4097408121 + 153016900 = 64011^2 + 12370^2 .

It is a cyclic number.

It is not a de Polignac number, because 4250425021 - 2¹ = 4250425019 is a prime.

It is a super-2 number, since 2×4250425021² = 36132225718285700882, which contains 22 as substring.

Together with 4250425019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4250425027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2125212510 + 2125212511.

It is an arithmetic number, because the mean of its divisors is an integer number (2125212511).

Almost surely, 2^4250425021 is an apocalyptic number.

It is an amenable number.

4250425021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4250425021 is an equidigital number, since it uses as much as digits as its factorization.

4250425021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 4250425021 is about 65195.2837327977. The cubic root of 4250425021 is about 1619.8598950368.

Adding to 4250425021 its reverse (1205240524), we get a palindrome (5455665545).

The spelling of 4250425021 in words is "four billion, two hundred fifty million, four hundred twenty-five thousand, twenty-one".