25841797 has 4 divisors (see below), whose sum is σ = 25952940. Its totient is φ = 25730656.

The previous prime is 25841779. The next prime is 25841861. The reversal of 25841797 is 79714852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12292036 + 13549761 = 3506^2 + 3681^2 .

It is not a de Polignac number, because 25841797 - 2¹⁵ = 25809029 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 (25841597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55222 + ... + 55687.

It is an arithmetic number, because the mean of its divisors is an integer number (6488235).

Almost surely, 2^25841797 is an apocalyptic number.

It is an amenable number.

25841797 is a deficient number, since it is larger than the sum of its proper divisors (111143).

25841797 is a wasteful number, since it uses less digits than its factorization.

25841797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111142.

The product of its digits is 141120, while the sum is 43.

The square root of 25841797 is about 5083.4827628310. The cubic root of 25841797 is about 295.6475176348.

The spelling of 25841797 in words is "twenty-five million, eight hundred forty-one thousand, seven hundred ninety-seven".