20000425 has 24 divisors (see below), whose sum is σ = 25926912. Its totient is φ = 15288000.

The previous prime is 20000389. The next prime is 20000429. The reversal of 20000425 is 52400002.

It is a happy number.

It is not a de Polignac number, because 20000425 - 2⁷ = 20000297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20000429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101427 + ... + 101623.

It is an arithmetic number, because the mean of its divisors is an integer number (1080288).

Almost surely, 2^20000425 is an apocalyptic number.

20000425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20000425 is a deficient number, since it is larger than the sum of its proper divisors (5926487).

20000425 is a wasteful number, since it uses less digits than its factorization.

20000425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 20000425 is about 4472.1834711917. The cubic root of 20000425 is about 271.4436843584.

Adding to 20000425 its reverse (52400002), we get a palindrome (72400427).

The spelling of 20000425 in words is "twenty million, four hundred twenty-five", and thus it is an aban number.