20925093 has 16 divisors (see below), whose sum is σ = 32915456. Its totient is φ = 11571120.

The previous prime is 20925053. The next prime is 20925119. The reversal of 20925093 is 39052902.

It is not a de Polignac number, because 20925093 - 2⁶ = 20925029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20925093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20925043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15421 + ... + 16722.

It is an arithmetic number, because the mean of its divisors is an integer number (2057216).

Almost surely, 2^20925093 is an apocalyptic number.

It is an amenable number.

20925093 is a deficient number, since it is larger than the sum of its proper divisors (11990363).

20925093 is a wasteful number, since it uses less digits than its factorization.

20925093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32184.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 20925093 is about 4574.3953698822. The cubic root of 20925093 is about 275.5639907439.

Adding to 20925093 its reverse (39052902), we get a palindrome (59977995).

The spelling of 20925093 in words is "twenty million, nine hundred twenty-five thousand, ninety-three".