784012848025 has 81 divisors (see below), whose sum is σ = 1136345798077. Its totient is φ = 536083820800.

The previous prime is 784012848011. The next prime is 784012848041. The reversal of 784012848025 is 520848210487.

The square root of 784012848025 is 885445.

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 18338847241 + 765674000784 = 135421^2 + 875028^2 .

It is not a de Polignac number, because 784012848025 - 2¹³ = 784012839833 is a prime.

It is a super-2 number, since 2×784012848025² (a number of 25 digits) 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 784012848025.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 827890602 + ... + 827891548.

Almost surely, 2^784012848025 is an apocalyptic number.

784012848025 is the 885445-th square number.

784012848025 is the 442723-rd centered octagonal number.

It is an amenable number.

784012848025 is a deficient number, since it is larger than the sum of its proper divisors (352332950052).

784012848025 is an equidigital number, since it uses as much as digits as its factorization.

784012848025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 49.

Multiplying 784012848025 by its sum of digits (49), we get a square (38416629553225 = 6198115²).

The spelling of 784012848025 in words is "seven hundred eighty-four billion, twelve million, eight hundred forty-eight thousand, twenty-five".