2783451783425 has 12 divisors (see below), whose sum is σ = 3451690194876. Its totient is φ = 2226625953600.

The previous prime is 2783451783421. The next prime is 2783451783461. The reversal of 2783451783425 is 5243871543872.

It is a Cunningham number, because it is equal to 1668368²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 218223516736 + 2565228266689 = 467144^2 + 1601633^2 .

It is not a de Polignac number, because 2783451783425 - 2² = 2783451783421 is a prime.

It is a super-3 number, since 3×2783451783425³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2783451783421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2966666 + ... + 3790515.

It is an arithmetic number, because the mean of its divisors is an integer number (287640849573).

Almost surely, 2^{2783451783425} is an apocalyptic number.

2783451783425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2783451783425 is a deficient number, since it is larger than the sum of its proper divisors (668238411451).

2783451783425 is a wasteful number, since it uses less digits than its factorization.

2783451783425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6773668 (or 6773663 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 59.

The spelling of 2783451783425 in words is "two trillion, seven hundred eighty-three billion, four hundred fifty-one million, seven hundred eighty-three thousand, four hundred twenty-five".