7440725657 has 8 divisors (see below), whose sum is σ = 7537406976. Its totient is φ = 7344639792.

The previous prime is 7440725647. The next prime is 7440725659. The reversal of 7440725657 is 7565270447.

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 7440725657 - 2¹⁶ = 7440660121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7440725659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123683 + ... + 173720.

It is an arithmetic number, because the mean of its divisors is an integer number (942175872).

Almost surely, 2^7440725657 is an apocalyptic number.

It is an amenable number.

7440725657 is a deficient number, since it is larger than the sum of its proper divisors (96681319).

7440725657 is a wasteful number, since it uses less digits than its factorization.

7440725657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297727.

The product of its (nonzero) digits is 1646400, while the sum is 47.

The square root of 7440725657 is about 86259.6409510265. The cubic root of 7440725657 is about 1952.2634822524.

The spelling of 7440725657 in words is "seven billion, four hundred forty million, seven hundred twenty-five thousand, six hundred fifty-seven".