6418671025 has 12 divisors (see below), whose sum is σ = 8571394972. Its totient is φ = 4739941440.

The previous prime is 6418671023. The next prime is 6418671031. The reversal of 6418671025 is 5201768146.

It can be written as a sum of positive squares in 6 ways, for example, as 898704 + 6417772321 = 948^2 + 80111^2 .

It is not a de Polignac number, because 6418671025 - 2¹ = 6418671023 is a prime.

It is a super-3 number, since 3×6418671025³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6418671023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9874554 + ... + 9875203.

Almost surely, 2^6418671025 is an apocalyptic number.

6418671025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6418671025 is a deficient number, since it is larger than the sum of its proper divisors (2152723947).

6418671025 is a wasteful number, since it uses less digits than its factorization.

6418671025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19749780 (or 19749775 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 6418671025 is about 80116.6089209971. The cubic root of 6418671025 is about 1858.4392643179.

The spelling of 6418671025 in words is "six billion, four hundred eighteen million, six hundred seventy-one thousand, twenty-five".