25045445 has 4 divisors (see below), whose sum is σ = 30054540. Its totient is φ = 20036352.

The previous prime is 25045429. The next prime is 25045453. The reversal of 25045445 is 54454052.

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 3682561 + 21362884 = 1919^2 + 4622^2 .

It is a cyclic number.

It is not a de Polignac number, because 25045445 - 2⁴ = 25045429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2504540 + ... + 2504549.

It is an arithmetic number, because the mean of its divisors is an integer number (7513635).

Almost surely, 2^25045445 is an apocalyptic number.

It is an amenable number.

25045445 is a deficient number, since it is larger than the sum of its proper divisors (5009095).

25045445 is an equidigital number, since it uses as much as digits as its factorization.

25045445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5009094.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 25045445 is about 5004.5424366269. The cubic root of 25045445 is about 292.5788425542.

Adding to 25045445 its reverse (54454052), we get a palindrome (79499497).

The spelling of 25045445 in words is "twenty-five million, forty-five thousand, four hundred forty-five".