45090725 has 6 divisors (see below), whose sum is σ = 55912530. Its totient is φ = 36072560.

The previous prime is 45090697. The next prime is 45090733. The reversal of 45090725 is 52709054.

It can be written as a sum of positive squares in 3 ways, for example, as 388129 + 44702596 = 623^2 + 6686^2 .

It is not a de Polignac number, because 45090725 - 2⁸ = 45090469 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 45090691 and 45090700.

It is a congruent 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, 901790 + ... + 901839.

It is an arithmetic number, because the mean of its divisors is an integer number (9318755).

Almost surely, 2^45090725 is an apocalyptic number.

It is an amenable number.

45090725 is a deficient number, since it is larger than the sum of its proper divisors (10821805).

45090725 is a wasteful number, since it uses less digits than its factorization.

45090725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803639 (or 1803634 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 45090725 is about 6714.9627698149. The cubic root of 45090725 is about 355.9282063911.

Adding to 45090725 its reverse (52709054), we get a palindrome (97799779).

The spelling of 45090725 in words is "forty-five million, ninety thousand, seven hundred twenty-five".