45135725 has 12 divisors (see below), whose sum is σ = 56106900. Its totient is φ = 36019200.

The previous prime is 45135719. The next prime is 45135743. The reversal of 45135725 is 52753154.

It can be written as a sum of positive squares in 6 ways, for example, as 5470921 + 39664804 = 2339^2 + 6298^2 .

It is not a de Polignac number, because 45135725 - 2⁴ = 45135709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45135691 and 45135700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9215 + ... + 13235.

It is an arithmetic number, because the mean of its divisors is an integer number (4675575).

Almost surely, 2^45135725 is an apocalyptic number.

It is an amenable number.

45135725 is a deficient number, since it is larger than the sum of its proper divisors (10971175).

45135725 is a wasteful number, since it uses less digits than its factorization.

45135725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4480 (or 4475 counting only the distinct ones).

The product of its digits is 21000, while the sum is 32.

The square root of 45135725 is about 6718.3126601848. The cubic root of 45135725 is about 356.0465710442.

Adding to 45135725 its reverse (52753154), we get a palindrome (97888879).

The spelling of 45135725 in words is "forty-five million, one hundred thirty-five thousand, seven hundred twenty-five".