40821725 has 12 divisors (see below), whose sum is σ = 57850464. Its totient is φ = 27991920.

The previous prime is 40821707. The next prime is 40821779. The reversal of 40821725 is 52712804.

It is not a de Polignac number, because 40821725 - 2¹⁸ = 40559581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116459 + ... + 116808.

It is an arithmetic number, because the mean of its divisors is an integer number (4820872).

Almost surely, 2^40821725 is an apocalyptic number.

It is an amenable number.

40821725 is a deficient number, since it is larger than the sum of its proper divisors (17028739).

40821725 is a wasteful number, since it uses less digits than its factorization.

40821725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233284 (or 233279 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 40821725 is about 6389.1881330886. The cubic root of 40821725 is about 344.3212166626.

The spelling of 40821725 in words is "forty million, eight hundred twenty-one thousand, seven hundred twenty-five".