40125287 has 4 divisors (see below), whose sum is σ = 42485616. Its totient is φ = 37764960.

The previous prime is 40125277. The next prime is 40125301. The reversal of 40125287 is 78252104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40125287 - 2⁶ = 40125223 is a prime.

It is a super-2 number, since 2×40125287² = 3220077313664738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40125227) 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, 1180139 + ... + 1180172.

It is an arithmetic number, because the mean of its divisors is an integer number (10621404).

Almost surely, 2^40125287 is an apocalyptic number.

40125287 is a deficient number, since it is larger than the sum of its proper divisors (2360329).

40125287 is a wasteful number, since it uses less digits than its factorization.

40125287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360328.

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

The square root of 40125287 is about 6334.4523835924. The cubic root of 40125287 is about 342.3518801155.

The spelling of 40125287 in words is "forty million, one hundred twenty-five thousand, two hundred eighty-seven".