20065625442 has 12 divisors (see below), whose sum is σ = 43475521830. Its totient is φ = 6688541808.

The previous prime is 20065625401. The next prime is 20065625443. The reversal of 20065625442 is 24452656002.

20065625442 is a `hidden beast` number, since 2 + 0 + 0 + 6 + 562 + 54 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13700936601 + 6364688841 = 117051^2 + 79779^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20065625397 and 20065625406.

It is not an unprimeable number, because it can be changed into a prime (20065625443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 557378467 + ... + 557378502.

Almost surely, 2^20065625442 is an apocalyptic number.

20065625442 is an abundant number, since it is smaller than the sum of its proper divisors (23409896388).

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

20065625442 is a wasteful number, since it uses less digits than its factorization.

20065625442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114756977 (or 1114756974 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 20065625442 in words is "twenty billion, sixty-five million, six hundred twenty-five thousand, four hundred forty-two".