40252252520 has 32 divisors (see below), whose sum is σ = 95895073800. Its totient is φ = 15153788928.

The previous prime is 40252252517. The next prime is 40252252541. The reversal of 40252252520 is 2525225204.

It can be written as a sum of positive squares in 4 ways, for example, as 32768964484 + 7483288036 = 181022^2 + 86506^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29596565 + ... + 29597924.

Almost surely, 2^40252252520 is an apocalyptic number.

40252252520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40252252520 is an abundant number, since it is smaller than the sum of its proper divisors (55642821280).

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

40252252520 is a wasteful number, since it uses less digits than its factorization.

40252252520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59194517 (or 59194513 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 29.

Adding to 40252252520 its reverse (2525225204), we get a palindrome (42777477724).

The spelling of 40252252520 in words is "forty billion, two hundred fifty-two million, two hundred fifty-two thousand, five hundred twenty".