20650525 has 24 divisors (see below), whose sum is σ = 29462400. Its totient is φ = 14064960.

The previous prime is 20650519. The next prime is 20650541. The reversal of 20650525 is 52505602.

It is not a de Polignac number, because 20650525 - 2⁹ = 20650013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 20650525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34176 + ... + 34774.

It is an arithmetic number, because the mean of its divisors is an integer number (1227600).

Almost surely, 2^20650525 is an apocalyptic number.

20650525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20650525 is a deficient number, since it is larger than the sum of its proper divisors (8811875).

20650525 is a wasteful number, since it uses less digits than its factorization.

20650525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 808 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 20650525 is about 4544.2848722324. The cubic root of 20650525 is about 274.3534120447.

The spelling of 20650525 in words is "twenty million, six hundred fifty thousand, five hundred twenty-five".