25012445 has 4 divisors (see below), whose sum is σ = 30014940. Its totient is φ = 20009952.

The previous prime is 25012441. The next prime is 25012447. The reversal of 25012445 is 54421052.

It is a happy number.

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 10004569 + 15007876 = 3163^2 + 3874^2 .

It is a cyclic number.

It is not a de Polignac number, because 25012445 - 2² = 25012441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25012445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25012441) 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, 2501240 + ... + 2501249.

It is an arithmetic number, because the mean of its divisors is an integer number (7503735).

Almost surely, 2^25012445 is an apocalyptic number.

It is an amenable number.

25012445 is a deficient number, since it is larger than the sum of its proper divisors (5002495).

25012445 is an equidigital number, since it uses as much as digits as its factorization.

25012445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002494.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 25012445 is about 5001.2443451605. The cubic root of 25012445 is about 292.4502849736.

Adding to 25012445 its reverse (54421052), we get a palindrome (79433497).

The spelling of 25012445 in words is "twenty-five million, twelve thousand, four hundred forty-five".