40142525 has 24 divisors (see below), whose sum is σ = 54538920. Its totient is φ = 29173760.

The previous prime is 40142519. The next prime is 40142527. The reversal of 40142525 is 52524104.

It is a happy number.

40142525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 1229881 + 38912644 = 1109^2 + 6238^2 .

It is not a de Polignac number, because 40142525 - 2¹² = 40138429 is a prime.

It is a super-2 number, since 2×40142525² = 3222844626751250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40142525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40142527) 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 23 ways as a sum of consecutive naturals, for example, 10697 + ... + 13953.

It is an arithmetic number, because the mean of its divisors is an integer number (2272455).

Almost surely, 2^40142525 is an apocalyptic number.

It is an amenable number.

40142525 is a deficient number, since it is larger than the sum of its proper divisors (14396395).

40142525 is a wasteful number, since it uses less digits than its factorization.

40142525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313 (or 3308 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 40142525 is about 6335.8128918080. The cubic root of 40142525 is about 342.4008983885.

Adding to 40142525 its reverse (52524104), we get a palindrome (92666629).

The spelling of 40142525 in words is "forty million, one hundred forty-two thousand, five hundred twenty-five".