40725593 has 4 divisors (see below), whose sum is σ = 40939008. Its totient is φ = 40512180.

The previous prime is 40725583. The next prime is 40725631. The reversal of 40725593 is 39552704.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40725593 - 2⁸ = 40725337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40725533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106421 + ... + 106802.

It is an arithmetic number, because the mean of its divisors is an integer number (10234752).

Almost surely, 2^40725593 is an apocalyptic number.

It is an amenable number.

40725593 is a deficient number, since it is larger than the sum of its proper divisors (213415).

40725593 is a wasteful number, since it uses less digits than its factorization.

40725593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213414.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 40725593 is about 6381.6606772846. The cubic root of 40725593 is about 344.0507209554.

Subtracting from 40725593 its reverse (39552704), we obtain a square (1172889 = 1083²).

The spelling of 40725593 in words is "forty million, seven hundred twenty-five thousand, five hundred ninety-three".