20725622 has 8 divisors (see below), whose sum is σ = 32440176. Its totient is φ = 9912232.

The previous prime is 20725619. The next prime is 20725631. The reversal of 20725622 is 22652702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20725591 and 20725600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225233 + ... + 225324.

It is an arithmetic number, because the mean of its divisors is an integer number (4055022).

Almost surely, 2^20725622 is an apocalyptic number.

20725622 is a deficient number, since it is larger than the sum of its proper divisors (11714554).

20725622 is a wasteful number, since it uses less digits than its factorization.

20725622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450582.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 20725622 is about 4552.5401700589. The cubic root of 20725622 is about 274.6855778315.

The spelling of 20725622 in words is "twenty million, seven hundred twenty-five thousand, six hundred twenty-two".