490721225 has 6 divisors (see below), whose sum is σ = 608494350. Its totient is φ = 392576960.

The previous prime is 490721213. The next prime is 490721233. The reversal of 490721225 is 522127094.

It can be written as a sum of positive squares in 3 ways, for example, as 8128201 + 482593024 = 2851^2 + 21968^2 .

It is not a de Polignac number, because 490721225 - 2⁸ = 490720969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 490721191 and 490721200.

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, 9814400 + ... + 9814449.

It is an arithmetic number, because the mean of its divisors is an integer number (101415725).

Almost surely, 2^490721225 is an apocalyptic number.

It is an amenable number.

490721225 is a deficient number, since it is larger than the sum of its proper divisors (117773125).

490721225 is a wasteful number, since it uses less digits than its factorization.

490721225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19628859 (or 19628854 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 490721225 is about 22152.2284432063. The cubic root of 490721225 is about 788.7601257990.

The spelling of 490721225 in words is "four hundred ninety million, seven hundred twenty-one thousand, two hundred twenty-five".