14666421025 has 27 divisors (see below), whose sum is σ = 18576624171. Its totient is φ = 11486567040.

The previous prime is 14666421023. The next prime is 14666421047. The reversal of 14666421025 is 52012466641.

The square root of 14666421025 is 121105.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 1195568929 + 13470852096 = 34577^2 + 116064^2 .

It is not a de Polignac number, because 14666421025 - 2¹ = 14666421023 is a prime.

It is a super-3 number, since 3×14666421025³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14666421023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 32092597 + ... + 32093053.

Almost surely, 2^14666421025 is an apocalyptic number.

14666421025 is the 121105-th square number.

14666421025 is the 60553-rd centered octagonal number.

It is an amenable number.

14666421025 is a deficient number, since it is larger than the sum of its proper divisors (3910203146).

14666421025 is an frugal number, since it uses more digits than its factorization.

14666421025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 14666421025 its reverse (52012466641), we get a palindrome (66678887666).

The spelling of 14666421025 in words is "fourteen billion, six hundred sixty-six million, four hundred twenty-one thousand, twenty-five".