40425187 has 8 divisors (see below), whose sum is σ = 44759232. Its totient is φ = 36201000.

The previous prime is 40425173. The next prime is 40425193. The reversal of 40425187 is 78152404.

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

It is not a de Polignac number, because 40425187 - 2¹⁹ = 39900899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40425107) 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, 26689 + ... + 28162.

It is an arithmetic number, because the mean of its divisors is an integer number (5594904).

Almost surely, 2^40425187 is an apocalyptic number.

40425187 is a deficient number, since it is larger than the sum of its proper divisors (4334045).

40425187 is a wasteful number, since it uses less digits than its factorization.

40425187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54929.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 40425187 is about 6358.0804493180. The cubic root of 40425187 is about 343.2026868576.

It can be divided in two parts, 4042 and 5187, that added together give a palindrome (9229).

The spelling of 40425187 in words is "forty million, four hundred twenty-five thousand, one hundred eighty-seven".