245725490 has 16 divisors (see below), whose sum is σ = 450652248. Its totient is φ = 96435456.

The previous prime is 245725489. The next prime is 245725517. The reversal of 245725490 is 94527542.

It can be written as a sum of positive squares in 4 ways, for example, as 209641441 + 36084049 = 14479^2 + 6007^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231287 + ... + 232346.

Almost surely, 2^245725490 is an apocalyptic number.

245725490 is a deficient number, since it is larger than the sum of its proper divisors (204926758).

245725490 is a wasteful number, since it uses less digits than its factorization.

245725490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463693.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 245725490 is about 15675.6336395056. The cubic root of 245725490 is about 626.3495021863.

The spelling of 245725490 in words is "two hundred forty-five million, seven hundred twenty-five thousand, four hundred ninety".