425032981 has 2 divisors, whose sum is σ = 425032982. Its totient is φ = 425032980.

The previous prime is 425032973. The next prime is 425033009. The reversal of 425032981 is 189230524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424978225 + 54756 = 20615^2 + 234^2 .

It is a cyclic number.

It is not a de Polignac number, because 425032981 - 2³ = 425032973 is a prime.

It is a super-2 number, since 2×425032981² = 361306069875492722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425032901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212516490 + 212516491.

It is an arithmetic number, because the mean of its divisors is an integer number (212516491).

Almost surely, 2^425032981 is an apocalyptic number.

It is an amenable number.

425032981 is a deficient number, since it is larger than the sum of its proper divisors (1).

425032981 is an equidigital number, since it uses as much as digits as its factorization.

425032981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 425032981 is about 20616.3280193152. The cubic root of 425032981 is about 751.8667459726.

The spelling of 425032981 in words is "four hundred twenty-five million, thirty-two thousand, nine hundred eighty-one".