40260625 has 20 divisors (see below), whose sum is σ = 51699076. Its totient is φ = 31320000.

The previous prime is 40260611. The next prime is 40260629. The reversal of 40260625 is 52606204.

It can be written as a sum of positive squares in 10 ways, for example, as 35438209 + 4822416 = 5953^2 + 2196^2 .

It is not a de Polignac number, because 40260625 - 2⁹ = 40260113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40260625.

It is not an unprimeable number, because it can be changed into a prime (40260629) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22255 + ... + 23995.

Almost surely, 2^40260625 is an apocalyptic number.

It is an amenable number.

40260625 is a deficient number, since it is larger than the sum of its proper divisors (11438451).

40260625 is an equidigital number, since it uses as much as digits as its factorization.

40260625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798 (or 1783 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 40260625 is about 6345.1260822776. The cubic root of 40260625 is about 342.7363527461.

Adding to 40260625 its reverse (52606204), we get a palindrome (92866829).

The spelling of 40260625 in words is "forty million, two hundred sixty thousand, six hundred twenty-five".