7447225040 has 80 divisors (see below), whose sum is σ = 18052201728. Its totient is φ = 2854645248.

The previous prime is 7447225031. The next prime is 7447225063. The reversal of 7447225040 is 405227447.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×7447225040² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161897 + ... + 202743.

Almost surely, 2^7447225040 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 7447225040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9026100864).

7447225040 is an abundant number, since it is smaller than the sum of its proper divisors (10604976688).

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

7447225040 is a wasteful number, since it uses less digits than its factorization.

7447225040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40956 (or 40950 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 35.

The square root of 7447225040 is about 86297.3060993215. The cubic root of 7447225040 is about 1952.8317429323.

The spelling of 7447225040 in words is "seven billion, four hundred forty-seven million, two hundred twenty-five thousand, forty".