105404451525 has 42 divisors (see below), whose sum is σ = 195962669330. Its totient is φ = 56215697760.

The previous prime is 105404451517. The next prime is 105404451527. The reversal of 105404451525 is 525154404501.

105404451525 is a `hidden beast` number, since 1 + 0 + 5 + 40 + 44 + 51 + 525 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 22967705601 + 82436745924 = 151551^2 + 287118^2 .

It is not a de Polignac number, because 105404451525 - 2³ = 105404451517 is a prime.

It is a super-2 number, since 2×105404451525² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105404451525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105404451527) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 2873530 + ... + 2909979.

Almost surely, 2^105404451525 is an apocalyptic number.

105404451525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105404451525 is a deficient number, since it is larger than the sum of its proper divisors (90558217805).

105404451525 is an frugal number, since it uses more digits than its factorization.

105404451525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5783537 (or 5783517 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 105404451525 in words is "one hundred five billion, four hundred four million, four hundred fifty-one thousand, five hundred twenty-five".