45420625 has 10 divisors (see below), whose sum is σ = 56758394. Its totient is φ = 36336000.

The previous prime is 45420601. The next prime is 45420643. The reversal of 45420625 is 52602454.

It can be written as a sum of positive squares in 5 ways, for example, as 18671041 + 26749584 = 4321^2 + 5172^2 .

It is a de Polignac number, because none of the positive numbers 2^k-45420625 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45420593 and 45420602.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 35712 + ... + 36961.

Almost surely, 2^45420625 is an apocalyptic number.

It is an amenable number.

45420625 is a deficient number, since it is larger than the sum of its proper divisors (11337769).

45420625 is an frugal number, since it uses more digits than its factorization.

45420625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72693 (or 72678 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 45420625 is about 6739.4825469022. The cubic root of 45420625 is about 356.7941310317.

The spelling of 45420625 in words is "forty-five million, four hundred twenty thousand, six hundred twenty-five".