20411025 has 24 divisors (see below), whose sum is σ = 34536480. Its totient is φ = 10631040.

The previous prime is 20411011. The next prime is 20411029. The reversal of 20411025 is 52011402.

It is not a de Polignac number, because 20411025 - 2⁹ = 20410513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 20410995 and 20411013.

It is not an unprimeable number, because it can be changed into a prime (20411029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61 + ... + 6389.

It is an arithmetic number, because the mean of its divisors is an integer number (1439020).

Almost surely, 2^20411025 is an apocalyptic number.

20411025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20411025 is a deficient number, since it is larger than the sum of its proper divisors (14125455).

20411025 is a wasteful number, since it uses less digits than its factorization.

20411025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6385 (or 6380 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20411025 is about 4517.8562394127. The cubic root of 20411025 is about 273.2886560264.

Adding to 20411025 its reverse (52011402), we get a palindrome (72422427).

The spelling of 20411025 in words is "twenty million, four hundred eleven thousand, twenty-five".