20525012 has 6 divisors (see below), whose sum is σ = 35918778. Its totient is φ = 10262504.

The previous prime is 20525009. The next prime is 20525017. The reversal of 20525012 is 21052502.

It can be written as a sum of positive squares in only one way, i.e., 14394436 + 6130576 = 3794^2 + 2476^2 .

It is a super-2 number, since 2×20525012² = 842552235200288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2565623 + ... + 2565630.

It is an arithmetic number, because the mean of its divisors is an integer number (5986463).

Almost surely, 2^20525012 is an apocalyptic number.

It is an amenable number.

20525012 is a deficient number, since it is larger than the sum of its proper divisors (15393766).

20525012 is a wasteful number, since it uses less digits than its factorization.

20525012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5131257 (or 5131255 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 20525012 is about 4530.4538404005. The cubic root of 20525012 is about 273.7964460436.

Adding to 20525012 its reverse (21052502), we get a palindrome (41577514).

The spelling of 20525012 in words is "twenty million, five hundred twenty-five thousand, twelve".