40725181 has 8 divisors (see below), whose sum is σ = 46801664. Its totient is φ = 34713360.

The previous prime is 40725161. The next prime is 40725187. The reversal of 40725181 is 18152704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40725181 - 2¹⁷ = 40594109 is a prime.

It is a super-2 number, since 2×40725181² = 3317080734965522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40725187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14805 + ... + 17338.

It is an arithmetic number, because the mean of its divisors is an integer number (5850208).

Almost surely, 2^40725181 is an apocalyptic number.

It is an amenable number.

40725181 is a deficient number, since it is larger than the sum of its proper divisors (6076483).

40725181 is a wasteful number, since it uses less digits than its factorization.

40725181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32331.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 40725181 is about 6381.6283972040. The cubic root of 40725181 is about 344.0495607564.

Adding to 40725181 its reverse (18152704), we get a palindrome (58877885).

It can be divided in two parts, 40725 and 181, that multiplied together give a square (7371225 = 2715²).

The spelling of 40725181 in words is "forty million, seven hundred twenty-five thousand, one hundred eighty-one".