40578725 has 48 divisors (see below), whose sum is σ = 58121280. Its totient is φ = 27840000.

The previous prime is 40578697. The next prime is 40578731. The reversal of 40578725 is 52787504.

It is not a de Polignac number, because 40578725 - 2⁸ = 40578469 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 665195 + ... + 665255.

It is an arithmetic number, because the mean of its divisors is an integer number (1210860).

Almost surely, 2^40578725 is an apocalyptic number.

It is an amenable number.

40578725 is a deficient number, since it is larger than the sum of its proper divisors (17542555).

40578725 is a wasteful number, since it uses less digits than its factorization.

40578725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 40578725 is about 6370.1432479969. The cubic root of 40578725 is about 343.6366414097.

The spelling of 40578725 in words is "forty million, five hundred seventy-eight thousand, seven hundred twenty-five".