20262625 has 16 divisors (see below), whose sum is σ = 25461072. Its totient is φ = 16099200.

The previous prime is 20262601. The next prime is 20262637. The reversal of 20262625 is 52626202.

It can be written as a sum of positive squares in 8 ways, for example, as 7273809 + 12988816 = 2697^2 + 3604^2 .

It is not a de Polignac number, because 20262625 - 2⁷ = 20262497 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20262625.

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, 21157 + ... + 22093.

It is an arithmetic number, because the mean of its divisors is an integer number (1591317).

Almost surely, 2^20262625 is an apocalyptic number.

20262625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20262625 is a deficient number, since it is larger than the sum of its proper divisors (5198447).

20262625 is an equidigital number, since it uses as much as digits as its factorization.

20262625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20262625 is about 4501.4025592031. The cubic root of 20262625 is about 272.6247219656.

Adding to 20262625 its reverse (52626202), we get a palindrome (72888827).

The spelling of 20262625 in words is "twenty million, two hundred sixty-two thousand, six hundred twenty-five".