25925645 has 4 divisors (see below), whose sum is σ = 31110780. Its totient is φ = 20740512.

The previous prime is 25925621. The next prime is 25925651. The reversal of 25925645 is 54652952.

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 20557156 + 5368489 = 4534^2 + 2317^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25925645 is a prime.

It is a super-3 number, since 3×25925645³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25925599 and 25925608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2592560 + ... + 2592569.

It is an arithmetic number, because the mean of its divisors is an integer number (7777695).

Almost surely, 2^25925645 is an apocalyptic number.

It is an amenable number.

25925645 is a deficient number, since it is larger than the sum of its proper divisors (5185135).

25925645 is an equidigital number, since it uses as much as digits as its factorization.

25925645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5185134.

The product of its digits is 108000, while the sum is 38.

The square root of 25925645 is about 5091.7231857201. The cubic root of 25925645 is about 295.9669315688.

The spelling of 25925645 in words is "twenty-five million, nine hundred twenty-five thousand, six hundred forty-five".