40512125 has 8 divisors (see below), whose sum is σ = 50559288. Its totient is φ = 32409600.

The previous prime is 40512119. The next prime is 40512127. The reversal of 40512125 is 52121504.

It can be written as a sum of positive squares in 4 ways, for example, as 12517444 + 27994681 = 3538^2 + 5291^2 .

It is not a de Polignac number, because 40512125 - 2¹⁶ = 40446589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40512097 and 40512106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40512127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161924 + ... + 162173.

It is an arithmetic number, because the mean of its divisors is an integer number (6319911).

Almost surely, 2^40512125 is an apocalyptic number.

It is an amenable number.

40512125 is a deficient number, since it is larger than the sum of its proper divisors (10047163).

40512125 is an equidigital number, since it uses as much as digits as its factorization.

40512125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324112 (or 324102 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 40512125 is about 6364.9135893585. The cubic root of 40512125 is about 343.4485401124.

Adding to 40512125 its reverse (52121504), we get a palindrome (92633629).

The spelling of 40512125 in words is "forty million, five hundred twelve thousand, one hundred twenty-five".