20125413314665 has 8 divisors (see below), whose sum is σ = 24250705505928. Its totient is φ = 16033524299520.

The previous prime is 20125413314651. The next prime is 20125413314681. The reversal of 20125413314665 is 56641331452102.

It can be written as a sum of positive squares in 4 ways, for example, as 7698582735424 + 12426830579241 = 2774632^2 + 3525171^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20125413314665 - 2²⁹ = 20124876443753 is a prime.

It is a super-2 number, since 2×20125413314665² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8350792702 + ... + 8350795111.

It is an arithmetic number, because the mean of its divisors is an integer number (3031338188241).

Almost surely, 2^{20125413314665} is an apocalyptic number.

It is an amenable number.

20125413314665 is a deficient number, since it is larger than the sum of its proper divisors (4125292191263).

20125413314665 is a wasteful number, since it uses less digits than its factorization.

20125413314665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16701588059.

The product of its (nonzero) digits is 518400, while the sum is 43.

Adding to 20125413314665 its reverse (56641331452102), we get a palindrome (76766744766767).

The spelling of 20125413314665 in words is "twenty trillion, one hundred twenty-five billion, four hundred thirteen million, three hundred fourteen thousand, six hundred sixty-five".