775225344 has 68 divisors (see below), whose sum is σ = 2067776096. Its totient is φ = 258342912.

The previous prime is 775225343. The next prime is 775225351. The reversal of 775225344 is 443522577.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775225343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194637 + ... + 198579.

It is an arithmetic number, because the mean of its divisors is an integer number (30408472).

Almost surely, 2^775225344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775225344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1033888048).

775225344 is an abundant number, since it is smaller than the sum of its proper divisors (1292550752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

775225344 is an frugal number, since it uses more digits than its factorization.

775225344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3978 (or 3948 counting only the distinct ones).

The product of its digits is 235200, while the sum is 39.

The square root of 775225344 is about 27842.8688177063. The cubic root of 775225344 is about 918.6342937632.

The spelling of 775225344 in words is "seven hundred seventy-five million, two hundred twenty-five thousand, three hundred forty-four".