105121525445 has 8 divisors (see below), whose sum is σ = 129222558360. Its totient is φ = 82046068480.

The previous prime is 105121525429. The next prime is 105121525463. The reversal of 105121525445 is 544525121501.

It can be written as a sum of positive squares in 4 ways, for example, as 4465714276 + 100655811169 = 66826^2 + 317263^2 .

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

It is not a de Polignac number, because 105121525445 - 2⁴ = 105121525429 is a prime.

It is a super-2 number, since 2×105121525445² (a number of 23 digits) contains 22 as substring.

It is a Curzon 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, 256393760 + ... + 256394169.

It is an arithmetic number, because the mean of its divisors is an integer number (16152819795).

Almost surely, 2^105121525445 is an apocalyptic number.

It is an amenable number.

105121525445 is a deficient number, since it is larger than the sum of its proper divisors (24101032915).

105121525445 is an equidigital number, since it uses as much as digits as its factorization.

105121525445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512787975.

The product of its (nonzero) digits is 40000, while the sum is 35.

Adding to 105121525445 its reverse (544525121501), we get a palindrome (649646646946).

The spelling of 105121525445 in words is "one hundred five billion, one hundred twenty-one million, five hundred twenty-five thousand, four hundred forty-five".