6442725701 has 4 divisors (see below), whose sum is σ = 6443498304. Its totient is φ = 6441953100.

The previous prime is 6442725673. The next prime is 6442725703. The reversal of 6442725701 is 1075272446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1075272446 = 2 ⋅537636223.

It is a cyclic number.

It is not a de Polignac number, because 6442725701 - 2¹⁸ = 6442463557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442725703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373655 + ... + 390516.

It is an arithmetic number, because the mean of its divisors is an integer number (1610874576).

Almost surely, 2^6442725701 is an apocalyptic number.

It is an amenable number.

6442725701 is a deficient number, since it is larger than the sum of its proper divisors (772603).

6442725701 is an equidigital number, since it uses as much as digits as its factorization.

6442725701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772602.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 6442725701 is about 80266.5914375340. The cubic root of 6442725701 is about 1860.7579387805.

The spelling of 6442725701 in words is "six billion, four hundred forty-two million, seven hundred twenty-five thousand, seven hundred one".