20625016 has 16 divisors (see below), whose sum is σ = 38721240. Its totient is φ = 10299360.

The previous prime is 20624987. The next prime is 20625019. The reversal of 20625016 is 61052602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625019) 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, 9330 + ... + 11326.

Almost surely, 2^20625016 is an apocalyptic number.

It is an amenable number.

20625016 is a deficient number, since it is larger than the sum of its proper divisors (18096224).

20625016 is a wasteful number, since it uses less digits than its factorization.

20625016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3294 (or 3290 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20625016 is about 4541.4772926879. The cubic root of 20625016 is about 274.2403985363.

Adding to 20625016 its reverse (61052602), we get a palindrome (81677618).

The spelling of 20625016 in words is "twenty million, six hundred twenty-five thousand, sixteen".