25530297 has 8 divisors (see below), whose sum is σ = 36658944. Its totient is φ = 15710928.

The previous prime is 25530293. The next prime is 25530313. The reversal of 25530297 is 79203552.

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

It is not a de Polignac number, because 25530297 - 2² = 25530293 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (25530293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327273 + ... + 327350.

It is an arithmetic number, because the mean of its divisors is an integer number (4582368).

Almost surely, 2^25530297 is an apocalyptic number.

It is an amenable number.

25530297 is a deficient number, since it is larger than the sum of its proper divisors (11128647).

25530297 is a wasteful number, since it uses less digits than its factorization.

25530297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654639.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 25530297 is about 5052.7514286773. The cubic root of 25530297 is about 294.4547892045.

The spelling of 25530297 in words is "twenty-five million, five hundred thirty thousand, two hundred ninety-seven".