25288330 has 8 divisors (see below), whose sum is σ = 45519012. Its totient is φ = 10115328.

The previous prime is 25288313. The next prime is 25288331. The reversal of 25288330 is 3388252.

It can be written as a sum of positive squares in 2 ways, for example, as 25190361 + 97969 = 5019^2 + 313^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×25288330³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25288292 and 25288301.

It is not an unprimeable number, because it can be changed into a prime (25288331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264407 + ... + 1264426.

Almost surely, 2^25288330 is an apocalyptic number.

25288330 is a deficient number, since it is larger than the sum of its proper divisors (20230682).

25288330 is a wasteful number, since it uses less digits than its factorization.

25288330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528840.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 25288330 is about 5028.7503417847. The cubic root of 25288330 is about 293.5215891528.

The spelling of 25288330 in words is "twenty-five million, two hundred eighty-eight thousand, three hundred thirty".