40115925 has 48 divisors (see below), whose sum is σ = 74538880. Its totient is φ = 21150720.

The previous prime is 40115899. The next prime is 40115927. The reversal of 40115925 is 52951104.

40115925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40115925 - 2⁵ = 40115893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40115927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69237 + ... + 69813.

Almost surely, 2^40115925 is an apocalyptic number.

40115925 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40115925 is a deficient number, since it is larger than the sum of its proper divisors (34422955).

40115925 is a wasteful number, since it uses less digits than its factorization.

40115925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 40115925 is about 6333.7133657910. The cubic root of 40115925 is about 342.3252522885.

The spelling of 40115925 in words is "forty million, one hundred fifteen thousand, nine hundred twenty-five".