6402271725 has 24 divisors (see below), whose sum is σ = 11761211520. Its totient is φ = 3414544560.

The previous prime is 6402271721. The next prime is 6402271741. The reversal of 6402271725 is 5271722046.

It is a happy number.

6402271725 is a `hidden beast` number, since 640 + 2 + 2 + 7 + 1 + 7 + 2 + 5 = 666.

It is not a de Polignac number, because 6402271725 - 2² = 6402271721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6402271725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402271721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4741749 + ... + 4743098.

It is an arithmetic number, because the mean of its divisors is an integer number (490050480).

Almost surely, 2^6402271725 is an apocalyptic number.

It is an amenable number.

6402271725 is a deficient number, since it is larger than the sum of its proper divisors (5358939795).

6402271725 is a wasteful number, since it uses less digits than its factorization.

6402271725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9484866 (or 9484855 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 6402271725 is about 80014.1970215286. The cubic root of 6402271725 is about 1856.8551827375.

The spelling of 6402271725 in words is "six billion, four hundred two million, two hundred seventy-one thousand, seven hundred twenty-five".