20525772 has 24 divisors (see below), whose sum is σ = 48320496. Its totient is φ = 6780928.

The previous prime is 20525761. The next prime is 20525773. The reversal of 20525772 is 27752502.

It is not an unprimeable number, because it can be changed into a prime (20525773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6213 + ... + 8924.

It is an arithmetic number, because the mean of its divisors is an integer number (2013354).

Almost surely, 2^20525772 is an apocalyptic number.

It is an amenable number.

20525772 is an abundant number, since it is smaller than the sum of its proper divisors (27794724).

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

20525772 is a wasteful number, since it uses less digits than its factorization.

20525772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15257 (or 15255 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 20525772 is about 4530.5377164306. The cubic root of 20525772 is about 273.7998253795.

The spelling of 20525772 in words is "twenty million, five hundred twenty-five thousand, seven hundred seventy-two".