40087525 has 6 divisors (see below), whose sum is σ = 49708562. Its totient is φ = 32070000.

The previous prime is 40087517. The next prime is 40087529. The reversal of 40087525 is 52578004.

It can be written as a sum of positive squares in 3 ways, for example, as 6180196 + 33907329 = 2486^2 + 5823^2 .

It is not a de Polignac number, because 40087525 - 2³ = 40087517 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 (40087529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 801726 + ... + 801775.

Almost surely, 2^40087525 is an apocalyptic number.

It is an amenable number.

40087525 is a deficient number, since it is larger than the sum of its proper divisors (9621037).

40087525 is a wasteful number, since it uses less digits than its factorization.

40087525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603511 (or 1603506 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 40087525 is about 6331.4709981173. The cubic root of 40087525 is about 342.2444503601.

The spelling of 40087525 in words is "forty million, eighty-seven thousand, five hundred twenty-five".