20125105401 has 8 divisors (see below), whose sum is σ = 27457508320. Its totient is φ = 13104719712.

The previous prime is 20125105391. The next prime is 20125105411. The reversal of 20125105401 is 10450152102.

It is an interprime number because it is at equal distance from previous prime (20125105391) and next prime (20125105411).

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

It is not a de Polignac number, because 20125105401 - 2⁶ = 20125105337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20125105411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78004156 + ... + 78004413.

It is an arithmetic number, because the mean of its divisors is an integer number (3432188540).

Almost surely, 2^20125105401 is an apocalyptic number.

It is an amenable number.

20125105401 is a deficient number, since it is larger than the sum of its proper divisors (7332402919).

20125105401 is a wasteful number, since it uses less digits than its factorization.

20125105401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156008615.

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 20125105401 its reverse (10450152102), we get a palindrome (30575257503).

The spelling of 20125105401 in words is "twenty billion, one hundred twenty-five million, one hundred five thousand, four hundred one".