40328725 has 6 divisors (see below), whose sum is σ = 50007650. Its totient is φ = 32262960.

The previous prime is 40328713. The next prime is 40328767. The reversal of 40328725 is 52782304.

It can be written as a sum of positive squares in 3 ways, for example, as 272484 + 40056241 = 522^2 + 6329^2 .

It is not a de Polignac number, because 40328725 - 2⁵ = 40328693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 806550 + ... + 806599.

Almost surely, 2^40328725 is an apocalyptic number.

It is an amenable number.

40328725 is a deficient number, since it is larger than the sum of its proper divisors (9678925).

40328725 is a wasteful number, since it uses less digits than its factorization.

40328725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613159 (or 1613154 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 40328725 is about 6350.4901385641. The cubic root of 40328725 is about 342.9294876686.

The spelling of 40328725 in words is "forty million, three hundred twenty-eight thousand, seven hundred twenty-five".