20252758956 has 12 divisors (see below), whose sum is σ = 47256437592. Its totient is φ = 6750919648.

The previous prime is 20252758949. The next prime is 20252758957. The reversal of 20252758956 is 65985725202.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 20252758899 and 20252758908.

It is not an unprimeable number, because it can be changed into a prime (20252758957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843864945 + ... + 843864968.

It is an arithmetic number, because the mean of its divisors is an integer number (3938036466).

Almost surely, 2^20252758956 is an apocalyptic number.

It is an amenable number.

20252758956 is an abundant number, since it is smaller than the sum of its proper divisors (27003678636).

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

20252758956 is a wasteful number, since it uses less digits than its factorization.

20252758956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687729920 (or 1687729918 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 51.

The spelling of 20252758956 in words is "twenty billion, two hundred fifty-two million, seven hundred fifty-eight thousand, nine hundred fifty-six".