20453025 has 48 divisors (see below), whose sum is σ = 36823040. Its totient is φ = 9979200.

The previous prime is 20453009. The next prime is 20453029. The reversal of 20453025 is 52035402.

It is not a de Polignac number, because 20453025 - 2⁴ = 20453009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20452992 and 20453010.

It is not an unprimeable number, because it can be changed into a prime (20453029) 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, 43944 + ... + 44406.

Almost surely, 2^20453025 is an apocalyptic number.

20453025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20453025 is a deficient number, since it is larger than the sum of its proper divisors (16370015).

20453025 is a wasteful number, since it uses less digits than its factorization.

20453025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 521 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 20453025 is about 4522.5020729680. The cubic root of 20453025 is about 273.4759773336.

Adding to 20453025 its reverse (52035402), we get a palindrome (72488427).

The spelling of 20453025 in words is "twenty million, four hundred fifty-three thousand, twenty-five".