20545231425100 has 36 divisors (see below), whose sum is σ = 44583352408168. Its totient is φ = 8218055664000.

The previous prime is 20545231425077. The next prime is 20545231425133. The reversal of 20545231425100 is 152413254502.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37274515 + ... + 37821685.

Almost surely, 2^{20545231425100} is an apocalyptic number.

20545231425100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20545231425100 is an abundant number, since it is smaller than the sum of its proper divisors (24038120983068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20545231425100 is a wasteful number, since it uses less digits than its factorization.

20545231425100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922666 (or 922659 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 20545231425100 its reverse (152413254502), we get a palindrome (20697644679602).

The spelling of 20545231425100 in words is "twenty trillion, five hundred forty-five billion, two hundred thirty-one million, four hundred twenty-five thousand, one hundred".