424021025 has 6 divisors (see below), whose sum is σ = 525786102. Its totient is φ = 339216800.

The previous prime is 424021001. The next prime is 424021033. The reversal of 424021025 is 520120424.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 96845281 + 327175744 = 9841^2 + 18088^2 .

It is not a de Polignac number, because 424021025 - 2¹⁴ = 424004641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 424020988 and 424021006.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8480396 + ... + 8480445.

It is an arithmetic number, because the mean of its divisors is an integer number (87631017).

Almost surely, 2^424021025 is an apocalyptic number.

It is an amenable number.

424021025 is a deficient number, since it is larger than the sum of its proper divisors (101765077).

424021025 is a wasteful number, since it uses less digits than its factorization.

424021025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16960851 (or 16960846 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 424021025 is about 20591.7708077766. The cubic root of 424021025 is about 751.2695682346.

Adding to 424021025 its reverse (520120424), we get a palindrome (944141449).

The spelling of 424021025 in words is "four hundred twenty-four million, twenty-one thousand, twenty-five".