20106556767025 has 24 divisors (see below), whose sum is σ = 25002669976704. Its totient is φ = 16039773931200.

The previous prime is 20106556766987. The next prime is 20106556767053. The reversal of 20106556767025 is 52076765560102.

It is not a de Polignac number, because 20106556767025 - 2³⁵ = 20072197028657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20786182 + ... + 21731968.

It is an arithmetic number, because the mean of its divisors is an integer number (1041777915696).

Almost surely, 2^{20106556767025} is an apocalyptic number.

20106556767025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20106556767025 is a deficient number, since it is larger than the sum of its proper divisors (4896113209679).

20106556767025 is a wasteful number, since it uses less digits than its factorization.

20106556767025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948201 (or 948196 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 52.

The spelling of 20106556767025 in words is "twenty trillion, one hundred six billion, five hundred fifty-six million, seven hundred sixty-seven thousand, twenty-five".