20525401650550 has 192 divisors, whose sum is σ = 39889181928960. Its totient is φ = 7851137310720.

The previous prime is 20525401650541. The next prime is 20525401650557. The reversal of 20525401650550 is 5505610452502.

It is a super-2 number, since 2×20525401650550² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525401650557) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 27774562081 + ... + 27774562819.

It is an arithmetic number, because the mean of its divisors is an integer number (207756155880).

Almost surely, 2^{20525401650550} is an apocalyptic number.

20525401650550 is a deficient number, since it is larger than the sum of its proper divisors (19363780278410).

20525401650550 is a wasteful number, since it uses less digits than its factorization.

20525401650550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815 (or 1810 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 40.

The spelling of 20525401650550 in words is "twenty trillion, five hundred twenty-five billion, four hundred one million, six hundred fifty thousand, five hundred fifty".