20122645025 has 36 divisors (see below), whose sum is σ = 29120979888. Its totient is φ = 13753182240.

The previous prime is 20122645013. The next prime is 20122645033. The reversal of 20122645025 is 52054622102.

It is not a de Polignac number, because 20122645025 - 2¹⁴ = 20122628641 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 349322 + ... + 402828.

It is an arithmetic number, because the mean of its divisors is an integer number (808916108).

Almost surely, 2^20122645025 is an apocalyptic number.

20122645025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20122645025 is a deficient number, since it is larger than the sum of its proper divisors (8998334863).

20122645025 is a wasteful number, since it uses less digits than its factorization.

20122645025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53838 (or 53826 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 20122645025 in words is "twenty billion, one hundred twenty-two million, six hundred forty-five thousand, twenty-five".