25195837 has 4 divisors (see below), whose sum is σ = 25254460. Its totient is φ = 25137216.

The previous prime is 25195823. The next prime is 25195871. The reversal of 25195837 is 73859152.

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 2595321 + 22600516 = 1611^2 + 4754^2 .

It is a cyclic number.

It is not a de Polignac number, because 25195837 - 2¹⁵ = 25163069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25195837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25195817) 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, 28662 + ... + 29527.

It is an arithmetic number, because the mean of its divisors is an integer number (6313615).

Almost surely, 2^25195837 is an apocalyptic number.

It is an amenable number.

25195837 is a deficient number, since it is larger than the sum of its proper divisors (58623).

25195837 is an equidigital number, since it uses as much as digits as its factorization.

25195837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58622.

The product of its digits is 75600, while the sum is 40.

The square root of 25195837 is about 5019.5454973533. The cubic root of 25195837 is about 293.1632966271.

The spelling of 25195837 in words is "twenty-five million, one hundred ninety-five thousand, eight hundred thirty-seven".