4631943318025 has 27 divisors (see below), whose sum is σ = 5770946405973. Its totient is φ = 3688001352000.

The previous prime is 4631943317893. The next prime is 4631943318133. The reversal of 4631943318025 is 5208133491364.

The square root of 4631943318025 is 2152195.

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 1301303718009 + 3330639600016 = 1140747^2 + 1825004^2 .

It is not a de Polignac number, because 4631943318025 - 2²³ = 4631934929417 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 4631943318025.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2571872125 + ... + 2571873925.

Almost surely, 2^{4631943318025} is an apocalyptic number.

4631943318025 is the 2152195-th square number.

4631943318025 is the 1076098-th centered octagonal number.

It is an amenable number.

4631943318025 is a deficient number, since it is larger than the sum of its proper divisors (1139003087948).

4631943318025 is an frugal number, since it uses more digits than its factorization.

4631943318025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090 (or 2045 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

Multiplying 4631943318025 by its sum of digits (49), we get a square (226965222583225 = 15065365²).

The spelling of 4631943318025 in words is "four trillion, six hundred thirty-one billion, nine hundred forty-three million, three hundred eighteen thousand, twenty-five".