20455511541125 has 16 divisors (see below), whose sum is σ = 25528808688240. Its totient is φ = 16364197512000.

The previous prime is 20455511541121. The next prime is 20455511541131. The reversal of 20455511541125 is 52114511555402.

It can be written as a sum of positive squares in 8 ways, for example, as 2121237863809 + 18334273677316 = 1456447^2 + 4281854^2 .

It is not a de Polignac number, because 20455511541125 - 2² = 20455511541121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20455511541121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9024191 + ... + 11061059.

It is an arithmetic number, because the mean of its divisors is an integer number (1595550543015).

Almost surely, 2^{20455511541125} is an apocalyptic number.

20455511541125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20455511541125 is a deficient number, since it is larger than the sum of its proper divisors (5073297147115).

20455511541125 is an equidigital number, since it uses as much as digits as its factorization.

20455511541125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117225 (or 2117215 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 41.

The spelling of 20455511541125 in words is "twenty trillion, four hundred fifty-five billion, five hundred eleven million, five hundred forty-one thousand, one hundred twenty-five".