7255780064 has 96 divisors (see below), whose sum is σ = 16320782016. Its totient is φ = 3145605120.

The previous prime is 7255780061. The next prime is 7255780067. The reversal of 7255780064 is 4600875527.

It is an interprime number because it is at equal distance from previous prime (7255780061) and next prime (7255780067).

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7255779997 and 7255780024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7255780061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6838094 + ... + 6839154.

It is an arithmetic number, because the mean of its divisors is an integer number (170008146).

Almost surely, 2^7255780064 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 7255780064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8160391008).

7255780064 is an abundant number, since it is smaller than the sum of its proper divisors (9065001952).

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

7255780064 is a wasteful number, since it uses less digits than its factorization.

7255780064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068 (or 2060 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 44.

The square root of 7255780064 is about 85180.8667718285. The cubic root of 7255780064 is about 1935.9525265549.

The spelling of 7255780064 in words is "seven billion, two hundred fifty-five million, seven hundred eighty thousand, sixty-four".