4273525561 has 2 divisors, whose sum is σ = 4273525562. Its totient is φ = 4273525560.

The previous prime is 4273525541. The next prime is 4273525573. The reversal of 4273525561 is 1655253724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3656499961 + 617025600 = 60469^2 + 24840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4273525561 is a prime.

It is not a weakly prime, because it can be changed into another prime (4273525541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2136762780 + 2136762781.

It is an arithmetic number, because the mean of its divisors is an integer number (2136762781).

Almost surely, 2^4273525561 is an apocalyptic number.

It is an amenable number.

4273525561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4273525561 is an equidigital number, since it uses as much as digits as its factorization.

4273525561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 40.

The square root of 4273525561 is about 65372.2078638927. The cubic root of 4273525561 is about 1622.7891747893.

The spelling of 4273525561 in words is "four billion, two hundred seventy-three million, five hundred twenty-five thousand, five hundred sixty-one".