948425561 has 2 divisors, whose sum is σ = 948425562. Its totient is φ = 948425560.

The previous prime is 948425557. The next prime is 948425567. The reversal of 948425561 is 165524849.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 837523600 + 110901961 = 28940^2 + 10531^2 .

It is a cyclic number.

It is not a de Polignac number, because 948425561 - 2² = 948425557 is a prime.

It is a super-2 number, since 2×948425561² = 1799022089516329442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (948425567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474212780 + 474212781.

It is an arithmetic number, because the mean of its divisors is an integer number (474212781).

Almost surely, 2^948425561 is an apocalyptic number.

It is an amenable number.

948425561 is a deficient number, since it is larger than the sum of its proper divisors (1).

948425561 is an equidigital number, since it uses as much as digits as its factorization.

948425561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 44.

The square root of 948425561 is about 30796.5186506527. The cubic root of 948425561 is about 982.5042025775.

The spelling of 948425561 in words is "nine hundred forty-eight million, four hundred twenty-five thousand, five hundred sixty-one".