40452521525 has 24 divisors (see below), whose sum is σ = 54040202664. Its totient is φ = 29861280000.

The previous prime is 40452521507. The next prime is 40452521533. The reversal of 40452521525 is 52512525404.

It can be written as a sum of positive squares in 12 ways, for example, as 11075247121 + 29377274404 = 105239^2 + 171398^2 .

It is not a de Polignac number, because 40452521525 - 2⁸ = 40452521269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 886775 + ... + 931275.

It is an arithmetic number, because the mean of its divisors is an integer number (2251675111).

Almost surely, 2^40452521525 is an apocalyptic number.

It is an amenable number.

40452521525 is a deficient number, since it is larger than the sum of its proper divisors (13587681139).

40452521525 is a wasteful number, since it uses less digits than its factorization.

40452521525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47321 (or 47316 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 40452521525 in words is "forty billion, four hundred fifty-two million, five hundred twenty-one thousand, five hundred twenty-five".