45625509 has 12 divisors (see below), whose sum is σ = 66053676. Its totient is φ = 30347712.

The previous prime is 45625487. The next prime is 45625553. The reversal of 45625509 is 90552654.

45625509 is a `hidden beast` number, since 45 + 62 + 550 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38750625 + 6874884 = 6225^2 + 2622^2 .

It is not a de Polignac number, because 45625509 - 2⁸ = 45625253 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45625589) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1434 + ... + 9659.

It is an arithmetic number, because the mean of its divisors is an integer number (5504473).

Almost surely, 2^45625509 is an apocalyptic number.

It is an amenable number.

45625509 is a deficient number, since it is larger than the sum of its proper divisors (20428167).

45625509 is a wasteful number, since it uses less digits than its factorization.

45625509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11556 (or 11553 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 45625509 is about 6754.6657208185. The cubic root of 45625509 is about 357.3298037409.

The spelling of 45625509 in words is "forty-five million, six hundred twenty-five thousand, five hundred nine".