49999818813025 has 9 divisors (see below), whose sum is σ = 61999819168723. Its totient is φ = 39999826766200.

The previous prime is 49999818813013. The next prime is 49999818813143. The reversal of 49999818813025 is 52031881899994.

The square root of 49999818813025 is 7071055.

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

It can be written as a sum of positive squares in only one way, i.e., 17999934772689 + 31999884040336 = 4242633^2 + 5656844^2 .

It is not a de Polignac number, because 49999818813025 - 2⁷ = 49999818812897 is a prime.

It is a Duffinian number.

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, 34648170 + ... + 36062380.

Almost surely, 2^{49999818813025} is an apocalyptic number.

49999818813025 is the 7071055-th square number.

49999818813025 is the 3535528-th centered octagonal number.

It is an amenable number.

49999818813025 is a deficient number, since it is larger than the sum of its proper divisors (12000000355698).

49999818813025 is an frugal number, since it uses more digits than its factorization.

49999818813025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828432 (or 1414216 counting only the distinct ones).

The product of its (nonzero) digits is 403107840, while the sum is 76.

The spelling of 49999818813025 in words is "forty-nine trillion, nine hundred ninety-nine billion, eight hundred eighteen million, eight hundred thirteen thousand, twenty-five".