7255879680 has 208 divisors, whose sum is σ = 26534121984. Its totient is φ = 1658388480.

The previous prime is 7255879661. The next prime is 7255879681. The reversal of 7255879680 is 869785527.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7255879680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7255879681) 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, 421645 + ... + 438515.

Almost surely, 2^7255879680 is an apocalyptic number.

7255879680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7255879680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13267060992).

7255879680 is an abundant number, since it is smaller than the sum of its proper divisors (19278242304).

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

7255879680 is a wasteful number, since it uses less digits than its factorization.

7255879680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16910 (or 16888 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 57.

The square root of 7255879680 is about 85181.4515020729. The cubic root of 7255879680 is about 1935.9613862025.

The spelling of 7255879680 in words is "seven billion, two hundred fifty-five million, eight hundred seventy-nine thousand, six hundred eighty".