40871925 has 48 divisors (see below), whose sum is σ = 75768960. Its totient is φ = 21600000.

The previous prime is 40871921. The next prime is 40871947. The reversal of 40871925 is 52917804.

It is not a de Polignac number, because 40871925 - 2² = 40871921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40871925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40871921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101725 + ... + 102125.

It is an arithmetic number, because the mean of its divisors is an integer number (1578520).

Almost surely, 2^40871925 is an apocalyptic number.

40871925 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40871925 is a deficient number, since it is larger than the sum of its proper divisors (34897035).

40871925 is a wasteful number, since it uses less digits than its factorization.

40871925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 40871925 is about 6393.1154377189. The cubic root of 40871925 is about 344.4623004001.

The spelling of 40871925 in words is "forty million, eight hundred seventy-one thousand, nine hundred twenty-five".