25197825 has 24 divisors (see below), whose sum is σ = 44113248. Its totient is φ = 12647680.

The previous prime is 25197803. The next prime is 25197833. The reversal of 25197825 is 52879152.

It is not a de Polignac number, because 25197825 - 2¹⁸ = 24935681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8607 + ... + 11156.

It is an arithmetic number, because the mean of its divisors is an integer number (1838052).

Almost surely, 2^25197825 is an apocalyptic number.

25197825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25197825 is a deficient number, since it is larger than the sum of its proper divisors (18915423).

25197825 is a wasteful number, since it uses less digits than its factorization.

25197825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19793 (or 19788 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 25197825 is about 5019.7435193444. The cubic root of 25197825 is about 293.1710068070.

The spelling of 25197825 in words is "twenty-five million, one hundred ninety-seven thousand, eight hundred twenty-five".