20492925 has 48 divisors (see below), whose sum is σ = 36336960. Its totient is φ = 10160640.

The previous prime is 20492921. The next prime is 20492929. The reversal of 20492925 is 52929402.

It is an interprime number because it is at equal distance from previous prime (20492921) and next prime (20492929).

It is not a de Polignac number, because 20492925 - 2² = 20492921 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20492921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103927 + ... + 104123.

It is an arithmetic number, because the mean of its divisors is an integer number (757020).

Almost surely, 2^20492925 is an apocalyptic number.

20492925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20492925 is a deficient number, since it is larger than the sum of its proper divisors (15844035).

20492925 is a wasteful number, since it uses less digits than its factorization.

20492925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 20492925 is about 4526.9111985989. The cubic root of 20492925 is about 273.6536951956.

The spelling of 20492925 in words is "twenty million, four hundred ninety-two thousand, nine hundred twenty-five".