20265300556 has 6 divisors (see below), whose sum is σ = 35464275980. Its totient is φ = 10132650276.

The previous prime is 20265300541. The next prime is 20265300569. The reversal of 20265300556 is 65500356202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2533162566 + ... + 2533162573.

Almost surely, 2^20265300556 is an apocalyptic number.

It is an amenable number.

20265300556 is a deficient number, since it is larger than the sum of its proper divisors (15198975424).

20265300556 is a wasteful number, since it uses less digits than its factorization.

20265300556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5066325143 (or 5066325141 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 20265300556 its reverse (65500356202), we get a palindrome (85765656758).

The spelling of 20265300556 in words is "twenty billion, two hundred sixty-five million, three hundred thousand, five hundred fifty-six".