45661725 has 30 divisors (see below), whose sum is σ = 84585050. Its totient is φ = 24351840.

The previous prime is 45661691. The next prime is 45661751. The reversal of 45661725 is 52716654.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 14424804 + 31236921 = 3798^2 + 5589^2 .

It is not a de Polignac number, because 45661725 - 2⁷ = 45661597 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45661725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 9250 + ... + 13299.

Almost surely, 2^45661725 is an apocalyptic number.

45661725 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45661725 is a deficient number, since it is larger than the sum of its proper divisors (38923325).

45661725 is a wasteful number, since it uses less digits than its factorization.

45661725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22571 (or 22557 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 45661725 is about 6757.3460026848. The cubic root of 45661725 is about 357.4243242106.

The spelling of 45661725 in words is "forty-five million, six hundred sixty-one thousand, seven hundred twenty-five".