4791918012025 has 9 divisors (see below), whose sum is σ = 5941991907021. Its totient is φ = 3833525653440.

The previous prime is 4791918012017. The next prime is 4791918012047. The reversal of 4791918012025 is 5202108191974.

The square root of 4791918012025 is 2189045.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1106731352169 + 3685186659856 = 1052013^2 + 1919684^2 .

It is not a de Polignac number, because 4791918012025 - 2³ = 4791918012017 is a prime.

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 4791918012025.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10726321 + ... + 11164129.

Almost surely, 2^{4791918012025} is an apocalyptic number.

4791918012025 is the 2189045-th square number.

4791918012025 is the 1094523-rd centered octagonal number.

It is an amenable number.

4791918012025 is a deficient number, since it is larger than the sum of its proper divisors (1150073894996).

4791918012025 is an frugal number, since it uses more digits than its factorization.

4791918012025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875628 (or 437814 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 49.

Multiplying 4791918012025 by its sum of digits (49), we get a square (234803982589225 = 15323315²).

The spelling of 4791918012025 in words is "four trillion, seven hundred ninety-one billion, nine hundred eighteen million, twelve thousand, twenty-five".