7256280491 has 8 divisors (see below), whose sum is σ = 7435024800. Its totient is φ = 7077620160.

The previous prime is 7256280463. The next prime is 7256280503. The reversal of 7256280491 is 1940826527.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7256280491 - 2¹⁸ = 7256018347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7256288491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176525 + ... + 213713.

It is an arithmetic number, because the mean of its divisors is an integer number (929378100).

Almost surely, 2^7256280491 is an apocalyptic number.

7256280491 is a deficient number, since it is larger than the sum of its proper divisors (178744309).

7256280491 is a wasteful number, since it uses less digits than its factorization.

7256280491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41989.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 7256280491 is about 85183.8041590067. The cubic root of 7256280491 is about 1935.9970327111.

The spelling of 7256280491 in words is "seven billion, two hundred fifty-six million, two hundred eighty thousand, four hundred ninety-one".