4157225561 has 2 divisors, whose sum is σ = 4157225562. Its totient is φ = 4157225560.

The previous prime is 4157225533. The next prime is 4157225573. The reversal of 4157225561 is 1655227514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4010815561 + 146410000 = 63331^2 + 12100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4157225561 is a prime.

It is not a weakly prime, because it can be changed into another prime (4157225521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2078612780 + 2078612781.

It is an arithmetic number, because the mean of its divisors is an integer number (2078612781).

Almost surely, 2^4157225561 is an apocalyptic number.

It is an amenable number.

4157225561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4157225561 is an equidigital number, since it uses as much as digits as its factorization.

4157225561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 38.

The square root of 4157225561 is about 64476.5504737963. The cubic root of 4157225561 is about 1607.9326835893.

The spelling of 4157225561 in words is "four billion, one hundred fifty-seven million, two hundred twenty-five thousand, five hundred sixty-one".