6252755665 has 16 divisors (see below), whose sum is σ = 8084110608. Its totient is φ = 4615347456.

The previous prime is 6252755617. The next prime is 6252755671. The reversal of 6252755665 is 5665572526.

It can be written as a sum of positive squares in 8 ways, for example, as 23126481 + 6229629184 = 4809^2 + 78928^2 .

It is a cyclic number.

It is not a de Polignac number, because 6252755665 - 2²³ = 6244367057 is a prime.

It is a super-3 number, since 3×6252755665³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian 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, 132799 + ... + 173611.

It is an arithmetic number, because the mean of its divisors is an integer number (505256913).

Almost surely, 2^6252755665 is an apocalyptic number.

6252755665 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6252755665 is a deficient number, since it is larger than the sum of its proper divisors (1831354943).

6252755665 is a wasteful number, since it uses less digits than its factorization.

6252755665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43188.

The product of its digits is 3780000, while the sum is 49.

The square root of 6252755665 is about 79074.3679393013. The cubic root of 6252755665 is about 1842.2864283870.

The spelling of 6252755665 in words is "six billion, two hundred fifty-two million, seven hundred fifty-five thousand, six hundred sixty-five".