20498025 has 24 divisors (see below), whose sum is σ = 34032544. Its totient is φ = 10886400.

The previous prime is 20498003. The next prime is 20498033. The reversal of 20498025 is 52089402.

It is not a de Polignac number, because 20498025 - 2⁵ = 20497993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20497983 and 20498001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24870 + ... + 25680.

Almost surely, 2^20498025 is an apocalyptic number.

20498025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20498025 is a deficient number, since it is larger than the sum of its proper divisors (13534519).

20498025 is a wasteful number, since it uses less digits than its factorization.

20498025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1156 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 20498025 is about 4527.4744615514. The cubic root of 20498025 is about 273.6763943806.

The spelling of 20498025 in words is "twenty million, four hundred ninety-eight thousand, twenty-five".