40221250525 has 12 divisors (see below), whose sum is σ = 51222307252. Its totient is φ = 31307351040.

The previous prime is 40221250501. The next prime is 40221250561. The reversal of 40221250525 is 52505212204.

It can be written as a sum of positive squares in 6 ways, for example, as 4497982489 + 35723268036 = 67067^2 + 189006^2 .

It is not a de Polignac number, because 40221250525 - 2²⁹ = 39684379613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40221250493 and 40221250502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21740292 + ... + 21742141.

Almost surely, 2^40221250525 is an apocalyptic number.

It is an amenable number.

40221250525 is a deficient number, since it is larger than the sum of its proper divisors (11001056727).

40221250525 is a wasteful number, since it uses less digits than its factorization.

40221250525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43482480 (or 43482475 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

Adding to 40221250525 its reverse (52505212204), we get a palindrome (92726462729).

The spelling of 40221250525 in words is "forty billion, two hundred twenty-one million, two hundred fifty thousand, five hundred twenty-five".