424978225 has 81 divisors (see below), whose sum is σ = 668514411. Its totient is φ = 267170400.

The previous prime is 424978219. The next prime is 424978237. The reversal of 424978225 is 522879424.

It is a happy number.

The square root of 424978225 is 20615.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 152992161 + 271986064 = 12369^2 + 16492^2 .

It is not a de Polignac number, because 424978225 - 2⁵ = 424978193 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 13708960 + ... + 13708990.

Almost surely, 2^424978225 is an apocalyptic number.

424978225 is the 20615-th square number.

424978225 is the 10308-th centered octagonal number.

It is an amenable number.

424978225 is a deficient number, since it is larger than the sum of its proper divisors (243536186).

424978225 is a wasteful number, since it uses less digits than its factorization.

424978225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 62 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The cubic root of 424978225 is about 751.8344575107.

The spelling of 424978225 in words is "four hundred twenty-four million, nine hundred seventy-eight thousand, two hundred twenty-five".