20325565554 has 32 divisors (see below), whose sum is σ = 46467484800. Its totient is φ = 5806173312.

The previous prime is 20325565531. The next prime is 20325565591. The reversal of 20325565554 is 45556552302.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184452 + ... + 273264.

It is an arithmetic number, because the mean of its divisors is an integer number (1452108900).

Almost surely, 2^20325565554 is an apocalyptic number.

20325565554 is an abundant number, since it is smaller than the sum of its proper divisors (26141919246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20325565554 is a wasteful number, since it uses less digits than its factorization.

20325565554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94274.

The product of its (nonzero) digits is 900000, while the sum is 42.

The spelling of 20325565554 in words is "twenty billion, three hundred twenty-five million, five hundred sixty-five thousand, five hundred fifty-four".