425061881 has 2 divisors, whose sum is σ = 425061882. Its totient is φ = 425061880.

The previous prime is 425061859. The next prime is 425061899. The reversal of 425061881 is 188160524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227406400 + 197655481 = 15080^2 + 14059^2 .

It is a cyclic number.

It is not a de Polignac number, because 425061881 - 2²⁶ = 357953017 is a prime.

It is a super-2 number, since 2×425061881² = 361355205358516322, which contains 22 as substring.

It is equal to p_22599602 and since 425061881 and 22599602 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (425061281) 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, 212530940 + 212530941.

It is an arithmetic number, because the mean of its divisors is an integer number (212530941).

Almost surely, 2^425061881 is an apocalyptic number.

It is an amenable number.

425061881 is a deficient number, since it is larger than the sum of its proper divisors (1).

425061881 is an equidigital number, since it uses as much as digits as its factorization.

425061881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 425061881 is about 20617.0289081623. The cubic root of 425061881 is about 751.8837865768.

The spelling of 425061881 in words is "four hundred twenty-five million, sixty-one thousand, eight hundred eighty-one".