4125225581 has 2 divisors, whose sum is σ = 4125225582. Its totient is φ = 4125225580.

The previous prime is 4125225529. The next prime is 4125225613. The reversal of 4125225581 is 1855225214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3691170025 + 434055556 = 60755^2 + 20834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4125225581 is a prime.

It is a super-2 number, since 2×4125225581² = 34034972188273575122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4125225781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2062612790 + 2062612791.

It is an arithmetic number, because the mean of its divisors is an integer number (2062612791).

Almost surely, 2^4125225581 is an apocalyptic number.

It is an amenable number.

4125225581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4125225581 is an equidigital number, since it uses as much as digits as its factorization.

4125225581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32000, while the sum is 35.

The square root of 4125225581 is about 64227.9190150203. The cubic root of 4125225581 is about 1603.7963991641.

The spelling of 4125225581 in words is "four billion, one hundred twenty-five million, two hundred twenty-five thousand, five hundred eighty-one".