20500250 has 32 divisors (see below), whose sum is σ = 39289536. Its totient is φ = 8005200.

The previous prime is 20500247. The next prime is 20500279. The reversal of 20500250 is 5200502.

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 15 ways as a sum of consecutive naturals, for example, 9797 + ... + 11703.

It is an arithmetic number, because the mean of its divisors is an integer number (1227798).

Almost surely, 2^20500250 is an apocalyptic number.

20500250 is a deficient number, since it is larger than the sum of its proper divisors (18789286).

20500250 is a wasteful number, since it uses less digits than its factorization.

20500250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967 (or 1957 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 20500250 is about 4527.7201768661. The cubic root of 20500250 is about 273.6862962768.

Adding to 20500250 its reverse (5200502), we get a palindrome (25700752).

The spelling of 20500250 in words is "twenty million, five hundred thousand, two hundred fifty".