40857725 has 6 divisors (see below), whose sum is σ = 50663610. Its totient is φ = 32686160.

The previous prime is 40857703. The next prime is 40857757. The reversal of 40857725 is 52775804.

It can be written as a sum of positive squares in 3 ways, for example, as 76729 + 40780996 = 277^2 + 6386^2 .

It is not a de Polignac number, because 40857725 - 2⁸ = 40857469 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, 817130 + ... + 817179.

It is an arithmetic number, because the mean of its divisors is an integer number (8443935).

Almost surely, 2^40857725 is an apocalyptic number.

It is an amenable number.

40857725 is a deficient number, since it is larger than the sum of its proper divisors (9805885).

40857725 is a wasteful number, since it uses less digits than its factorization.

40857725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634319 (or 1634314 counting only the distinct ones).

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

The square root of 40857725 is about 6392.0047715877. The cubic root of 40857725 is about 344.4224039737.

The spelling of 40857725 in words is "forty million, eight hundred fifty-seven thousand, seven hundred twenty-five".