425561029 has 2 divisors, whose sum is σ = 425561030. Its totient is φ = 425561028.

The previous prime is 425561021. The next prime is 425561033. The reversal of 425561029 is 920165524.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247338529 + 178222500 = 15727^2 + 13350^2 .

It is a cyclic number.

It is not a de Polignac number, because 425561029 - 2³ = 425561021 is a prime.

It is a super-2 number, since 2×425561029² = 362204378807077682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 425560985 and 425561003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425561021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212780514 + 212780515.

It is an arithmetic number, because the mean of its divisors is an integer number (212780515).

Almost surely, 2^425561029 is an apocalyptic number.

It is an amenable number.

425561029 is a deficient number, since it is larger than the sum of its proper divisors (1).

425561029 is an equidigital number, since it uses as much as digits as its factorization.

425561029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 425561029 is about 20629.1305924414. The cubic root of 425561029 is about 752.1779825485.

The spelling of 425561029 in words is "four hundred twenty-five million, five hundred sixty-one thousand, twenty-nine".