424200025 has 6 divisors (see below), whose sum is σ = 526008062. Its totient is φ = 339360000.

The previous prime is 424200019. The next prime is 424200037. The reversal of 424200025 is 520002424.

It can be written as a sum of positive squares in 3 ways, for example, as 73462041 + 350737984 = 8571^2 + 18728^2 .

It is a de Polignac number, because none of the positive numbers 2^k-424200025 is a prime.

It is a super-2 number, since 2×424200025² = 359891322420001250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 424199975 and 424200011.

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, 8483976 + ... + 8484025.

Almost surely, 2^424200025 is an apocalyptic number.

It is an amenable number.

424200025 is a deficient number, since it is larger than the sum of its proper divisors (101808037).

424200025 is a wasteful number, since it uses less digits than its factorization.

424200025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16968011 (or 16968006 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 424200025 is about 20596.1167456392. The cubic root of 424200025 is about 751.3752692306.

Adding to 424200025 its reverse (520002424), we get a palindrome (944202449).

The spelling of 424200025 in words is "four hundred twenty-four million, two hundred thousand, twenty-five".