2478904625 has 8 divisors (see below), whose sum is σ = 3093673128. Its totient is φ = 1983123600.

The previous prime is 2478904621. The next prime is 2478904633. The reversal of 2478904625 is 5264098742.

It can be written as a sum of positive squares in 4 ways, for example, as 45751696 + 2433152929 = 6764^2 + 49327^2 .

It is not a de Polignac number, because 2478904625 - 2² = 2478904621 is a prime.

It is a super-2 number, since 2×2478904625² = 12289936279692781250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2478904625.

It is not an unprimeable number, because it can be changed into a prime (2478904621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9915494 + ... + 9915743.

It is an arithmetic number, because the mean of its divisors is an integer number (386709141).

Almost surely, 2^2478904625 is an apocalyptic number.

2478904625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2478904625 is a deficient number, since it is larger than the sum of its proper divisors (614768503).

2478904625 is an equidigital number, since it uses as much as digits as its factorization.

2478904625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19831252 (or 19831242 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 2478904625 is about 49788.5993476418. The cubic root of 2478904625 is about 1353.3805764540.

The spelling of 2478904625 in words is "two billion, four hundred seventy-eight million, nine hundred four thousand, six hundred twenty-five".