25552445 has 16 divisors (see below), whose sum is σ = 32585328. Its totient is φ = 19169280.

The previous prime is 25552441. The next prime is 25552447. The reversal of 25552445 is 54425552.

It can be written as a sum of positive squares in 8 ways, for example, as 2493241 + 23059204 = 1579^2 + 4802^2 .

It is not a de Polignac number, because 25552445 - 2² = 25552441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25552441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43997 + ... + 44573.

It is an arithmetic number, because the mean of its divisors is an integer number (2036583).

Almost surely, 2^25552445 is an apocalyptic number.

It is an amenable number.

25552445 is a deficient number, since it is larger than the sum of its proper divisors (7032883).

25552445 is a wasteful number, since it uses less digits than its factorization.

25552445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120.

The product of its digits is 40000, while the sum is 32.

The square root of 25552445 is about 5054.9426307328. The cubic root of 25552445 is about 294.5399129004.

Adding to 25552445 its reverse (54425552), we get a palindrome (79977997).

The spelling of 25552445 in words is "twenty-five million, five hundred fifty-two thousand, four hundred forty-five".