20603025 has 48 divisors (see below), whose sum is σ = 38301120. Its totient is φ = 10857600.

The previous prime is 20603017. The next prime is 20603027. The reversal of 20603025 is 52030602.

It is not a de Polignac number, because 20603025 - 2³ = 20603017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20602989 and 20603007.

It is not an unprimeable number, because it can be changed into a prime (20603027) 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, 88309 + ... + 88541.

It is an arithmetic number, because the mean of its divisors is an integer number (797940).

Almost surely, 2^20603025 is an apocalyptic number.

20603025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20603025 is a deficient number, since it is larger than the sum of its proper divisors (17698095).

20603025 is a wasteful number, since it uses less digits than its factorization.

20603025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20603025 is about 4539.0555184972. The cubic root of 20603025 is about 274.1428961426.

Adding to 20603025 its reverse (52030602), we get a palindrome (72633627).

The spelling of 20603025 in words is "twenty million, six hundred three thousand, twenty-five".