45009025 has 6 divisors (see below), whose sum is σ = 55811222. Its totient is φ = 36007200.

The previous prime is 45009001. The next prime is 45009061. The reversal of 45009025 is 52090054.

It can be written as a sum of positive squares in 3 ways, for example, as 14017536 + 30991489 = 3744^2 + 5567^2 .

It is not a de Polignac number, because 45009025 - 2¹¹ = 45006977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1800361 = 45009025 / (4 + 5 + 0 + 0 + 9 + 0 + 2 + 5).

It is a Duffinian 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 5 ways as a sum of consecutive naturals, for example, 900156 + ... + 900205.

Almost surely, 2^45009025 is an apocalyptic number.

It is an amenable number.

45009025 is a deficient number, since it is larger than the sum of its proper divisors (10802197).

45009025 is a wasteful number, since it uses less digits than its factorization.

45009025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800371 (or 1800366 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 45009025 is about 6708.8765825584. The cubic root of 45009025 is about 355.7131073500.

Adding to 45009025 its reverse (52090054), we get a palindrome (97099079).

The spelling of 45009025 in words is "forty-five million, nine thousand, twenty-five".