20825612 has 12 divisors (see below), whose sum is σ = 38588760. Its totient is φ = 9800256.

The previous prime is 20825611. The next prime is 20825617. The reversal of 20825612 is 21652802.

It is a super-2 number, since 2×20825612² = 867412230349088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20825611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153062 + ... + 153197.

It is an arithmetic number, because the mean of its divisors is an integer number (3215730).

Almost surely, 2^20825612 is an apocalyptic number.

It is an amenable number.

20825612 is a deficient number, since it is larger than the sum of its proper divisors (17763148).

20825612 is a wasteful number, since it uses less digits than its factorization.

20825612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306280 (or 306278 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 20825612 is about 4563.5087378025. The cubic root of 20825612 is about 275.1266061662.

It can be divided in two parts, 20825 and 612, that multiplied together give a square (12744900 = 3570²).

The spelling of 20825612 in words is "twenty million, eight hundred twenty-five thousand, six hundred twelve".