109705828143025 has 9 divisors (see below), whose sum is σ = 136035291836523. Its totient is φ = 87764620618200.

The previous prime is 109705828142969. The next prime is 109705828143053. The reversal of 109705828143025 is 520341828507901.

The square root of 109705828143025 is 10474055.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 39494098131489 + 70211730011536 = 6284433^2 + 8379244^2 .

It is not a de Polignac number, because 109705828143025 - 2³⁹ = 109156072329137 is a prime.

It is a super-2 number, since 2×109705828143025² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 51322870 + ... + 53417680.

Almost surely, 2^{109705828143025} is an apocalyptic number.

109705828143025 is the 10474055-th square number.

109705828143025 is the 5237028-th centered octagonal number.

It is an amenable number.

109705828143025 is a deficient number, since it is larger than the sum of its proper divisors (26329463693498).

109705828143025 is an frugal number, since it uses more digits than its factorization.

109705828143025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4189632 (or 2094816 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 109705828143025 in words is "one hundred nine trillion, seven hundred five billion, eight hundred twenty-eight million, one hundred forty-three thousand, twenty-five".