20255610 has 16 divisors (see below), whose sum is σ = 48613536. Its totient is φ = 5401488.

The previous prime is 20255603. The next prime is 20255621. The reversal of 20255610 is 1655202.

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 7 ways as a sum of consecutive naturals, for example, 337564 + ... + 337623.

It is an arithmetic number, because the mean of its divisors is an integer number (3038346).

Almost surely, 2^20255610 is an apocalyptic number.

20255610 is an abundant number, since it is smaller than the sum of its proper divisors (28357926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20255610 is a wasteful number, since it uses less digits than its factorization.

20255610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675197.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 20255610 is about 4500.6232901677. The cubic root of 20255610 is about 272.5932570860.

It can be divided in two parts, 202556 and 10, that added together give a triangular number (202566 = T₆₃₆).

The spelling of 20255610 in words is "twenty million, two hundred fifty-five thousand, six hundred ten".