20133425 has 12 divisors (see below), whose sum is σ = 26886300. Its totient is φ = 14867520.

The previous prime is 20133413. The next prime is 20133431. The reversal of 20133425 is 52433102.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1540081 + 18593344 = 1241^2 + 4312^2 .

It is not a de Polignac number, because 20133425 - 2¹⁰ = 20132401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20133397 and 20133406.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30650 + ... + 31299.

It is an arithmetic number, because the mean of its divisors is an integer number (2240525).

Almost surely, 2^20133425 is an apocalyptic number.

20133425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20133425 is a deficient number, since it is larger than the sum of its proper divisors (6752875).

20133425 is a wasteful number, since it uses less digits than its factorization.

20133425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61972 (or 61967 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20133425 is about 4487.0285267647. The cubic root of 20133425 is about 272.0440429330.

Adding to 20133425 its reverse (52433102), we get a palindrome (72566527).

The spelling of 20133425 in words is "twenty million, one hundred thirty-three thousand, four hundred twenty-five".