40431525 has 48 divisors (see below), whose sum is σ = 74548800. Its totient is φ = 19215360.

The previous prime is 40431511. The next prime is 40431529. The reversal of 40431525 is 52513404.

It is not a de Polignac number, because 40431525 - 2⁴ = 40431509 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40431495 and 40431504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40431529) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23391 + ... + 25059.

It is an arithmetic number, because the mean of its divisors is an integer number (1553100).

Almost surely, 2^40431525 is an apocalyptic number.

It is an amenable number.

40431525 is a deficient number, since it is larger than the sum of its proper divisors (34117275).

40431525 is a wasteful number, since it uses less digits than its factorization.

40431525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718 (or 1713 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 40431525 is about 6358.5788506552. The cubic root of 40431525 is about 343.2206220866.

Adding to 40431525 its reverse (52513404), we get a palindrome (92944929).

The spelling of 40431525 in words is "forty million, four hundred thirty-one thousand, five hundred twenty-five".