425422121 has 2 divisors, whose sum is σ = 425422122. Its totient is φ = 425422120.

The previous prime is 425422111. The next prime is 425422157. The reversal of 425422121 is 121224524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422878096 + 2544025 = 20564^2 + 1595^2 .

It is a cyclic number.

It is not a de Polignac number, because 425422121 - 2¹⁴ = 425405737 is a prime.

It is a super-2 number, since 2×425422121² = 361967962072277282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (425422111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212711060 + 212711061.

It is an arithmetic number, because the mean of its divisors is an integer number (212711061).

Almost surely, 2^425422121 is an apocalyptic number.

It is an amenable number.

425422121 is a deficient number, since it is larger than the sum of its proper divisors (1).

425422121 is an equidigital number, since it uses as much as digits as its factorization.

425422121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280, while the sum is 23.

The square root of 425422121 is about 20625.7635252613. The cubic root of 425422121 is about 752.0961338027.

Adding to 425422121 its reverse (121224524), we get a palindrome (546646645).

The spelling of 425422121 in words is "four hundred twenty-five million, four hundred twenty-two thousand, one hundred twenty-one".