20507053225505 has 64 divisors (see below), whose sum is σ = 30988553895936. Its totient is φ = 12655971360000.

The previous prime is 20507053225481. The next prime is 20507053225543. The reversal of 20507053225505 is 50552235070502.

It is not a de Polignac number, because 20507053225505 - 2³² = 20502758258209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14879930 + ... + 16199580.

It is an arithmetic number, because the mean of its divisors is an integer number (484196154624).

Almost surely, 2^{20507053225505} is an apocalyptic number.

It is an amenable number.

20507053225505 is a deficient number, since it is larger than the sum of its proper divisors (10481500670431).

20507053225505 is a wasteful number, since it uses less digits than its factorization.

20507053225505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320078.

The product of its (nonzero) digits is 525000, while the sum is 41.

The spelling of 20507053225505 in words is "twenty trillion, five hundred seven billion, fifty-three million, two hundred twenty-five thousand, five hundred five".