25198487 has 8 divisors (see below), whose sum is σ = 25747200. Its totient is φ = 24653944.

The previous prime is 25198483. The next prime is 25198489. The reversal of 25198487 is 78489152.

25198487 is nontrivially palindromic in base 5.

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 25198487 - 2² = 25198483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25198483) 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, 13208 + ... + 14994.

It is an arithmetic number, because the mean of its divisors is an integer number (3218400).

Almost surely, 2^25198487 is an apocalyptic number.

25198487 is a deficient number, since it is larger than the sum of its proper divisors (548713).

25198487 is a wasteful number, since it uses less digits than its factorization.

25198487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085.

The product of its digits is 161280, while the sum is 44.

The square root of 25198487 is about 5019.8094585353. The cubic root of 25198487 is about 293.1735741913.

The spelling of 25198487 in words is "twenty-five million, one hundred ninety-eight thousand, four hundred eighty-seven".