20740840124025 has 48 divisors (see below), whose sum is σ = 39832775424128. Its totient is φ = 9326092032000.

The previous prime is 20740840123889. The next prime is 20740840124033. The reversal of 20740840124025 is 52042104804702.

It is not a de Polignac number, because 20740840124025 - 2⁸ = 20740840123769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 323790616 + ... + 323854665.

Almost surely, 2^{20740840124025} is an apocalyptic number.

20740840124025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20740840124025 is a deficient number, since it is larger than the sum of its proper divisors (19091935300103).

20740840124025 is a wasteful number, since it uses less digits than its factorization.

20740840124025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647645362 (or 647645357 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 39.

Adding to 20740840124025 its reverse (52042104804702), we get a palindrome (72782944928727).

The spelling of 20740840124025 in words is "twenty trillion, seven hundred forty billion, eight hundred forty million, one hundred twenty-four thousand, twenty-five".