425532021 has 8 divisors (see below), whose sum is σ = 568247520. Its totient is φ = 283252272.

The previous prime is 425532007. The next prime is 425532047. The reversal of 425532021 is 120235524.

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

It is not a de Polignac number, because 425532021 - 2⁶ = 425531957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 425531982 and 425532000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425532061) 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, 106651 + ... + 110568.

It is an arithmetic number, because the mean of its divisors is an integer number (71030940).

Almost surely, 2^425532021 is an apocalyptic number.

It is an amenable number.

425532021 is a deficient number, since it is larger than the sum of its proper divisors (142715499).

425532021 is a wasteful number, since it uses less digits than its factorization.

425532021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217875.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 425532021 is about 20628.4274970246. The cubic root of 425532021 is about 752.1608916393.

Adding to 425532021 its reverse (120235524), we get a palindrome (545767545).

The spelling of 425532021 in words is "four hundred twenty-five million, five hundred thirty-two thousand, twenty-one".