20522502250 has 16 divisors (see below), whose sum is σ = 38418124680. Its totient is φ = 8209000800.

The previous prime is 20522502227. The next prime is 20522502263. The reversal of 20522502250 is 5220522502.

It can be written as a sum of positive squares in 4 ways, for example, as 12205609441 + 8316892809 = 110479^2 + 91197^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41044755 + ... + 41045254.

Almost surely, 2^20522502250 is an apocalyptic number.

20522502250 is a deficient number, since it is larger than the sum of its proper divisors (17895622430).

20522502250 is an equidigital number, since it uses as much as digits as its factorization.

20522502250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82090026 (or 82090016 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The spelling of 20522502250 in words is "twenty billion, five hundred twenty-two million, five hundred two thousand, two hundred fifty".