40120525 has 6 divisors (see below), whose sum is σ = 49749482. Its totient is φ = 32096400.

The previous prime is 40120519. The next prime is 40120529. The reversal of 40120525 is 52502104.

It can be written as a sum of positive squares in 3 ways, for example, as 203401 + 39917124 = 451^2 + 6318^2 .

It is not a de Polignac number, because 40120525 - 2³ = 40120517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40120529) 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 5 ways as a sum of consecutive naturals, for example, 802386 + ... + 802435.

Almost surely, 2^40120525 is an apocalyptic number.

It is an amenable number.

40120525 is a deficient number, since it is larger than the sum of its proper divisors (9628957).

40120525 is a wasteful number, since it uses less digits than its factorization.

40120525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604831 (or 1604826 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 40120525 is about 6334.0764914863. The cubic root of 40120525 is about 342.3383363358.

Adding to 40120525 its reverse (52502104), we get a palindrome (92622629).

The spelling of 40120525 in words is "forty million, one hundred twenty thousand, five hundred twenty-five".