20725582 has 16 divisors (see below), whose sum is σ = 32033232. Its totient is φ = 10050880.

The previous prime is 20725547. The next prime is 20725589. The reversal of 20725582 is 28552702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20725589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15513 + ... + 16795.

It is an arithmetic number, because the mean of its divisors is an integer number (2002077).

Almost surely, 2^20725582 is an apocalyptic number.

20725582 is a deficient number, since it is larger than the sum of its proper divisors (11307650).

20725582 is a wasteful number, since it uses less digits than its factorization.

20725582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 20725582 is about 4552.5357769050. The cubic root of 20725582 is about 274.6854011189.

The spelling of 20725582 in words is "twenty million, seven hundred twenty-five thousand, five hundred eighty-two".