3125540212205 has 8 divisors (see below), whose sum is σ = 3751046426904. Its totient is φ = 2500166721600.

The previous prime is 3125540212187. The next prime is 3125540212211. The reversal of 3125540212205 is 5022120455213.

It can be written as a sum of positive squares in 4 ways, for example, as 45048364516 + 3080491847689 = 212246^2 + 1755133^2 .

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

It is not a de Polignac number, because 3125540212205 - 2³⁰ = 3124466470381 is a prime.

It is a super-2 number, since 2×3125540212205² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 33129206 + ... + 33223415.

It is an arithmetic number, because the mean of its divisors is an integer number (468880803363).

Almost surely, 2^{3125540212205} is an apocalyptic number.

It is an amenable number.

3125540212205 is a deficient number, since it is larger than the sum of its proper divisors (625506214699).

3125540212205 is an equidigital number, since it uses as much as digits as its factorization.

3125540212205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66362047.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 3125540212205 its reverse (5022120455213), we get a palindrome (8147660667418).

The spelling of 3125540212205 in words is "three trillion, one hundred twenty-five billion, five hundred forty million, two hundred twelve thousand, two hundred five".