20925042 has 32 divisors (see below), whose sum is σ = 44349120. Its totient is φ = 6563520.

The previous prime is 20925041. The next prime is 20925043. The reversal of 20925042 is 24052902.

It is an interprime number because it is at equal distance from previous prime (20925041) and next prime (20925043).

It is not an unprimeable number, because it can be changed into a prime (20925041) 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, 19192 + ... + 20252.

It is an arithmetic number, because the mean of its divisors is an integer number (1385910).

Almost surely, 2^20925042 is an apocalyptic number.

20925042 is an abundant number, since it is smaller than the sum of its proper divisors (23424078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20925042 is a wasteful number, since it uses less digits than its factorization.

20925042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20925042 is about 4574.3897953716. The cubic root of 20925042 is about 275.5637668695.

Adding to 20925042 its reverse (24052902), we get a palindrome (44977944).

The spelling of 20925042 in words is "twenty million, nine hundred twenty-five thousand, forty-two".