40625205140 has 48 divisors (see below), whose sum is σ = 91953178128. Its totient is φ = 14987387904.

The previous prime is 40625205121. The next prime is 40625205161. The reversal of 40625205140 is 4150252604.

It can be written as a sum of positive squares in 8 ways, for example, as 7639696 + 40617565444 = 2764^2 + 201538^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244694 + ... + 375666.

It is an arithmetic number, because the mean of its divisors is an integer number (1915691211).

Almost surely, 2^40625205140 is an apocalyptic number.

It is an amenable number.

40625205140 is an abundant number, since it is smaller than the sum of its proper divisors (51327972988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40625205140 is a wasteful number, since it uses less digits than its factorization.

40625205140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132188 (or 132186 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 40625205140 its reverse (4150252604), we get a palindrome (44775457744).

The spelling of 40625205140 in words is "forty billion, six hundred twenty-five million, two hundred five thousand, one hundred forty".