20525634 has 24 divisors (see below), whose sum is σ = 44908032. Its totient is φ = 6774840.

The previous prime is 20525633. The next prime is 20525653. The reversal of 20525634 is 43652502.

20525634 is a `hidden beast` number, since 2 + 0 + 5 + 25 + 634 = 666.

It is a super-3 number, since 3×20525634³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 20525598 and 20525607.

It is not an unprimeable number, because it can be changed into a prime (20525633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3682 + ... + 7389.

It is an arithmetic number, because the mean of its divisors is an integer number (1871168).

Almost surely, 2^20525634 is an apocalyptic number.

20525634 is an abundant number, since it is smaller than the sum of its proper divisors (24382398).

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

20525634 is a wasteful number, since it uses less digits than its factorization.

20525634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11182 (or 11179 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 20525634 is about 4530.5224864247. The cubic root of 20525634 is about 273.7992117695.

The spelling of 20525634 in words is "twenty million, five hundred twenty-five thousand, six hundred thirty-four".