425581829 has 2 divisors, whose sum is σ = 425581830. Its totient is φ = 425581828.

The previous prime is 425581801. The next prime is 425581837. The reversal of 425581829 is 928185524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 397204900 + 28376929 = 19930^2 + 5327^2 .

It is a cyclic number.

It is not a de Polignac number, because 425581829 - 2¹⁶ = 425516293 is a prime.

It is a super-2 number, since 2×425581829² = 362239786349970482, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425581829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425581129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212790914 + 212790915.

It is an arithmetic number, because the mean of its divisors is an integer number (212790915).

Almost surely, 2^425581829 is an apocalyptic number.

It is an amenable number.

425581829 is a deficient number, since it is larger than the sum of its proper divisors (1).

425581829 is an equidigital number, since it uses as much as digits as its factorization.

425581829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 44.

The square root of 425581829 is about 20629.6347277406. The cubic root of 425581829 is about 752.1902369970.

The spelling of 425581829 in words is "four hundred twenty-five million, five hundred eighty-one thousand, eight hundred twenty-nine".