20949339159425 has 48 divisors (see below), whose sum is σ = 27373350850560. Its totient is φ = 15883315080000.

The previous prime is 20949339159409. The next prime is 20949339159431. The reversal of 20949339159425 is 52495193394902.

It is not a de Polignac number, because 20949339159425 - 2⁴ = 20949339159409 is a prime.

It is a super-2 number, since 2×20949339159425² (a number of 27 digits) contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 11154650 + ... + 12896700.

It is an arithmetic number, because the mean of its divisors is an integer number (570278142720).

Almost surely, 2^{20949339159425} is an apocalyptic number.

20949339159425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20949339159425 is a deficient number, since it is larger than the sum of its proper divisors (6424011691135).

20949339159425 is a wasteful number, since it uses less digits than its factorization.

20949339159425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742414 (or 1742409 counting only the distinct ones).

The product of its (nonzero) digits is 94478400, while the sum is 65.

The spelling of 20949339159425 in words is "twenty trillion, nine hundred forty-nine billion, three hundred thirty-nine million, one hundred fifty-nine thousand, four hundred twenty-five".