40689125 has 8 divisors (see below), whose sum is σ = 50780184. Its totient is φ = 32551200.

The previous prime is 40689113. The next prime is 40689133. The reversal of 40689125 is 52198604.

It can be written as a sum of positive squares in 4 ways, for example, as 2137444 + 38551681 = 1462^2 + 6209^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40689125 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162632 + ... + 162881.

It is an arithmetic number, because the mean of its divisors is an integer number (6347523).

Almost surely, 2^40689125 is an apocalyptic number.

It is an amenable number.

40689125 is a deficient number, since it is larger than the sum of its proper divisors (10091059).

40689125 is an equidigital number, since it uses as much as digits as its factorization.

40689125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325528 (or 325518 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 40689125 is about 6378.8027873575. The cubic root of 40689125 is about 343.9479961274.

The spelling of 40689125 in words is "forty million, six hundred eighty-nine thousand, one hundred twenty-five".