20125540406 has 32 divisors (see below), whose sum is σ = 32487884352. Its totient is φ = 9316823040.

The previous prime is 20125540397. The next prime is 20125540429. The reversal of 20125540406 is 60404552102.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 532496 + ... + 569036.

It is an arithmetic number, because the mean of its divisors is an integer number (1015246386).

Almost surely, 2^20125540406 is an apocalyptic number.

20125540406 is a deficient number, since it is larger than the sum of its proper divisors (12362343946).

20125540406 is a wasteful number, since it uses less digits than its factorization.

20125540406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36824.

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

The spelling of 20125540406 in words is "twenty billion, one hundred twenty-five million, five hundred forty thousand, four hundred six".