2497222656 has 96 divisors (see below), whose sum is σ = 7397535600. Its totient is φ = 832389120.

The previous prime is 2497222621. The next prime is 2497222657. The reversal of 2497222656 is 6562227942.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×2497222656² = 12472241987279388672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2497222657) 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, 32716 + ... + 77876.

Almost surely, 2^2497222656 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 2497222656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3698767800).

2497222656 is an abundant number, since it is smaller than the sum of its proper divisors (4900312944).

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

2497222656 is an equidigital number, since it uses as much as digits as its factorization.

2497222656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45192 (or 45166 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 2497222656 is about 49972.2188420726. The cubic root of 2497222656 is about 1356.7060306345.

The spelling of 2497222656 in words is "two billion, four hundred ninety-seven million, two hundred twenty-two thousand, six hundred fifty-six".