494636625 has 120 divisors (see below), whose sum is σ = 1073780136. Its totient is φ = 225892800.

The previous prime is 494636621. The next prime is 494636627. The reversal of 494636625 is 526636494.

494636625 is a `hidden beast` number, since 4 + 9 + 4 + 636 + 6 + 2 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 63504 + 494573121 = 252^2 + 22239^2 .

It is not a de Polignac number, because 494636625 - 2² = 494636621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (494636621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 495627 + ... + 496623.

Almost surely, 2^494636625 is an apocalyptic number.

494636625 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

494636625 is an abundant number, since it is smaller than the sum of its proper divisors (579143511).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

494636625 is an equidigital number, since it uses as much as digits as its factorization.

494636625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038 (or 1012 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The square root of 494636625 is about 22240.4277162109. The cubic root of 494636625 is about 790.8523754056.

The spelling of 494636625 in words is "four hundred ninety-four million, six hundred thirty-six thousand, six hundred twenty-five".