25497198 has 12 divisors (see below), whose sum is σ = 55243968. Its totient is φ = 8499060.

The previous prime is 25497193. The next prime is 25497211. The reversal of 25497198 is 89179452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25497191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 708238 + ... + 708273.

It is an arithmetic number, because the mean of its divisors is an integer number (4603664).

Almost surely, 2^25497198 is an apocalyptic number.

25497198 is an abundant number, since it is smaller than the sum of its proper divisors (29746770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25497198 is a wasteful number, since it uses less digits than its factorization.

25497198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416519 (or 1416516 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 25497198 is about 5049.4750222177. The cubic root of 25497198 is about 294.3274845889.

The spelling of 25497198 in words is "twenty-five million, four hundred ninety-seven thousand, one hundred ninety-eight".