20725675 has 12 divisors (see below), whose sum is σ = 27053080. Its totient is φ = 15707520.

The previous prime is 20725673. The next prime is 20725693. The reversal of 20725675 is 57652702.

It is a happy number.

It is not a de Polignac number, because 20725675 - 2¹ = 20725673 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20725675.

It is not an unprimeable number, because it can be changed into a prime (20725673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21342 + ... + 22291.

Almost surely, 2^20725675 is an apocalyptic number.

20725675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20725675 is a deficient number, since it is larger than the sum of its proper divisors (6327405).

20725675 is a wasteful number, since it uses less digits than its factorization.

20725675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43662 (or 43657 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 20725675 is about 4552.5459909813. The cubic root of 20725675 is about 274.6858119752.

The spelling of 20725675 in words is "twenty million, seven hundred twenty-five thousand, six hundred seventy-five".