25330403 has 6 divisors (see below), whose sum is σ = 29466036. Its totient is φ = 21711732.

The previous prime is 25330399. The next prime is 25330423. The reversal of 25330403 is 30403352.

It is not a de Polignac number, because 25330403 - 2² = 25330399 is a prime.

It is a super-2 number, since 2×25330403² = 1283258632284818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25330423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 258425 + ... + 258522.

It is an arithmetic number, because the mean of its divisors is an integer number (4911006).

Almost surely, 2^25330403 is an apocalyptic number.

25330403 is a deficient number, since it is larger than the sum of its proper divisors (4135633).

25330403 is an equidigital number, since it uses as much as digits as its factorization.

25330403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516961 (or 516954 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 25330403 is about 5032.9318493300. The cubic root of 25330403 is about 293.6842793671.

Adding to 25330403 its reverse (30403352), we get a palindrome (55733755).

The spelling of 25330403 in words is "twenty-five million, three hundred thirty thousand, four hundred three".