423521025 has 24 divisors (see below), whose sum is σ = 704877504. Its totient is φ = 224376000.

The previous prime is 423521009. The next prime is 423521047. The reversal of 423521025 is 520125324.

It is not a de Polignac number, because 423521025 - 2⁴ = 423521009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423520986 and 423521004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7374 + ... + 30023.

It is an arithmetic number, because the mean of its divisors is an integer number (29369896).

Almost surely, 2^423521025 is an apocalyptic number.

It is an amenable number.

423521025 is a deficient number, since it is larger than the sum of its proper divisors (281356479).

423521025 is a wasteful number, since it uses less digits than its factorization.

423521025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37561 (or 37556 counting only the distinct ones).

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

The square root of 423521025 is about 20579.6264543359. The cubic root of 423521025 is about 750.9741563669.

Adding to 423521025 its reverse (520125324), we get a palindrome (943646349).

The spelling of 423521025 in words is "four hundred twenty-three million, five hundred twenty-one thousand, twenty-five".