25897497 has 8 divisors (see below), whose sum is σ = 34611840. Its totient is φ = 17224080.

The previous prime is 25897483. The next prime is 25897523. The reversal of 25897497 is 79479852.

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

It is not a de Polignac number, because 25897497 - 2⁶ = 25897433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25897097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8722 + ... + 11307.

It is an arithmetic number, because the mean of its divisors is an integer number (4326480).

Almost surely, 2^25897497 is an apocalyptic number.

It is an amenable number.

25897497 is a deficient number, since it is larger than the sum of its proper divisors (8714343).

25897497 is a wasteful number, since it uses less digits than its factorization.

25897497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20463.

The product of its digits is 1270080, while the sum is 51.

The square root of 25897497 is about 5088.9583413504. The cubic root of 25897497 is about 295.8597803419.

The spelling of 25897497 in words is "twenty-five million, eight hundred ninety-seven thousand, four hundred ninety-seven".