20525672 has 8 divisors (see below), whose sum is σ = 38485650. Its totient is φ = 10262832.

The previous prime is 20525671. The next prime is 20525677. The reversal of 20525672 is 27652502.

It can be written as a sum of positive squares in only one way, i.e., 13734436 + 6791236 = 3706^2 + 2606^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20525672² = 842606422103168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20525671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282847 + ... + 1282862.

Almost surely, 2^20525672 is an apocalyptic number.

It is an amenable number.

20525672 is a deficient number, since it is larger than the sum of its proper divisors (17959978).

20525672 is a wasteful number, since it uses less digits than its factorization.

20525672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565715 (or 2565711 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 20525672 is about 4530.5266801996. The cubic root of 20525672 is about 273.7993807348.

The spelling of 20525672 in words is "twenty million, five hundred twenty-five thousand, six hundred seventy-two".