425022421 has 8 divisors (see below), whose sum is σ = 429115320. Its totient is φ = 420948672.

The previous prime is 425022379. The next prime is 425022439. The reversal of 425022421 is 124220524.

It can be written as a sum of positive squares in 4 ways, for example, as 108680625 + 316341796 = 10425^2 + 17786^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 425022421 - 2¹¹ = 425020373 is a prime.

It is a super-3 number, since 3×425022421³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425022392 and 425022401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425022721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41971 + ... + 51103.

It is an arithmetic number, because the mean of its divisors is an integer number (53639415).

Almost surely, 2^425022421 is an apocalyptic number.

It is an amenable number.

425022421 is a deficient number, since it is larger than the sum of its proper divisors (4092899).

425022421 is a wasteful number, since it uses less digits than its factorization.

425022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9575.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 425022421 is about 20616.0719100414. The cubic root of 425022421 is about 751.8605191784.

Adding to 425022421 its reverse (124220524), we get a palindrome (549242945).

The spelling of 425022421 in words is "four hundred twenty-five million, twenty-two thousand, four hundred twenty-one".