40125625 has 40 divisors (see below), whose sum is σ = 54982400. Its totient is φ = 29160000.

The previous prime is 40125623. The next prime is 40125637. The reversal of 40125625 is 52652104.

It is not a de Polignac number, because 40125625 - 2¹ = 40125623 is a prime.

It is a super-2 number, since 2×40125625² = 3220131563281250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 40125625.

It is not an unprimeable number, because it can be changed into a prime (40125623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 368071 + ... + 368179.

It is an arithmetic number, because the mean of its divisors is an integer number (1374560).

Almost surely, 2^40125625 is an apocalyptic number.

It is an amenable number.

40125625 is a deficient number, since it is larger than the sum of its proper divisors (14856775).

40125625 is a wasteful number, since it uses less digits than its factorization.

40125625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 40125625 is about 6334.4790630327. The cubic root of 40125625 is about 342.3528413931.

Adding to 40125625 its reverse (52652104), we get a palindrome (92777729).

The spelling of 40125625 in words is "forty million, one hundred twenty-five thousand, six hundred twenty-five".