45447825 has 24 divisors (see below), whose sum is σ = 76745088. Its totient is φ = 23721280.

The previous prime is 45447821. The next prime is 45447841. The reversal of 45447825 is 52874454.

It is not a de Polignac number, because 45447825 - 2² = 45447821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45447821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2922 + ... + 9971.

It is an arithmetic number, because the mean of its divisors is an integer number (3197712).

Almost surely, 2^45447825 is an apocalyptic number.

It is an amenable number.

45447825 is a deficient number, since it is larger than the sum of its proper divisors (31297263).

45447825 is a wasteful number, since it uses less digits than its factorization.

45447825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12953 (or 12948 counting only the distinct ones).

The product of its digits is 179200, while the sum is 39.

The square root of 45447825 is about 6741.5002039605. The cubic root of 45447825 is about 356.8653385046.

The spelling of 45447825 in words is "forty-five million, four hundred forty-seven thousand, eight hundred twenty-five".