20526525 has 18 divisors (see below), whose sum is σ = 36765690. Its totient is φ = 10947360.

The previous prime is 20526503. The next prime is 20526551. The reversal of 20526525 is 52562502.

20526525 is a `hidden beast` number, since 2 + 0 + 5 + 2 + 652 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 7064964 + 13461561 = 2658^2 + 3669^2 .

It is not a de Polignac number, because 20526525 - 2⁷ = 20526397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 45390 + ... + 45839.

Almost surely, 2^20526525 is an apocalyptic number.

20526525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20526525 is a deficient number, since it is larger than the sum of its proper divisors (16239165).

20526525 is a wasteful number, since it uses less digits than its factorization.

20526525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91245 (or 91237 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 20526525 is about 4530.6208183868. The cubic root of 20526525 is about 273.8031735077.

The spelling of 20526525 in words is "twenty million, five hundred twenty-six thousand, five hundred twenty-five".