2128620022725 has 48 divisors (see below), whose sum is σ = 4233766561280. Its totient is φ = 921868516800.

The previous prime is 2128620022709. The next prime is 2128620022747. The reversal of 2128620022725 is 5272200268212.

It is not a de Polignac number, because 2128620022725 - 2⁴ = 2128620022709 is a prime.

It is a super-2 number, since 2×2128620022725² (a number of 25 digits) contains 22 as substring.

It is a congruent 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, 106687771 + ... + 106707720.

Almost surely, 2^{2128620022725} is an apocalyptic number.

2128620022725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2128620022725 is a deficient number, since it is larger than the sum of its proper divisors (2105146538555).

2128620022725 is a wasteful number, since it uses less digits than its factorization.

2128620022725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213395530 (or 213395525 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 2128620022725 in words is "two trillion, one hundred twenty-eight billion, six hundred twenty million, twenty-two thousand, seven hundred twenty-five".