25387297 has 8 divisors (see below), whose sum is σ = 27457920. Its totient is φ = 23333520.

The previous prime is 25387279. The next prime is 25387319. The reversal of 25387297 is 79278352.

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

It is a cyclic number.

It is not a de Polignac number, because 25387297 - 2¹⁵ = 25354529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25387207) 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, 979 + ... + 7192.

It is an arithmetic number, because the mean of its divisors is an integer number (3432240).

Almost surely, 2^25387297 is an apocalyptic number.

It is an amenable number.

25387297 is a deficient number, since it is larger than the sum of its proper divisors (2070623).

25387297 is a wasteful number, since it uses less digits than its factorization.

25387297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8423.

The product of its digits is 211680, while the sum is 43.

The square root of 25387297 is about 5038.5808517875. The cubic root of 25387297 is about 293.9039939815.

The spelling of 25387297 in words is "twenty-five million, three hundred eighty-seven thousand, two hundred ninety-seven".