20507250212 has 12 divisors (see below), whose sum is σ = 37998728460. Its totient is φ = 9650470656.

The previous prime is 20507250173. The next prime is 20507250223. The reversal of 20507250212 is 21205270502.

It can be written as a sum of positive squares in 2 ways, for example, as 6437494756 + 14069755456 = 80234^2 + 118616^2 .

It is a super-2 number, since 2×20507250212² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150788537 + ... + 150788672.

It is an arithmetic number, because the mean of its divisors is an integer number (3166560705).

Almost surely, 2^20507250212 is an apocalyptic number.

It is an amenable number.

20507250212 is a deficient number, since it is larger than the sum of its proper divisors (17491478248).

20507250212 is a wasteful number, since it uses less digits than its factorization.

20507250212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301577230 (or 301577228 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The spelling of 20507250212 in words is "twenty billion, five hundred seven million, two hundred fifty thousand, two hundred twelve".