105425241521 has 4 divisors (see below), whose sum is σ = 105425896512. Its totient is φ = 105424586532.

The previous prime is 105425241497. The next prime is 105425241527. The reversal of 105425241521 is 125142524501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105425241521 is a prime.

It is a super-2 number, since 2×105425241521² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105425241527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99620 + ... + 469866.

It is an arithmetic number, because the mean of its divisors is an integer number (26356474128).

Almost surely, 2^105425241521 is an apocalyptic number.

It is an amenable number.

105425241521 is a deficient number, since it is larger than the sum of its proper divisors (654991).

105425241521 is an equidigital number, since it uses as much as digits as its factorization.

105425241521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654990.

The product of its (nonzero) digits is 16000, while the sum is 32.

The spelling of 105425241521 in words is "one hundred five billion, four hundred twenty-five million, two hundred forty-one thousand, five hundred twenty-one".