12522744550 has 24 divisors (see below), whose sum is σ = 23299011000. Its totient is φ = 5007655680.

The previous prime is 12522744529. The next prime is 12522744557. The reversal of 12522744550 is 5544722521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12522744557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148726 + ... + 217174.

It is an arithmetic number, because the mean of its divisors is an integer number (970792125).

Almost surely, 2^12522744550 is an apocalyptic number.

12522744550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12522744550 is a deficient number, since it is larger than the sum of its proper divisors (10776266450).

12522744550 is a wasteful number, since it uses less digits than its factorization.

12522744550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72120 (or 72115 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 37.

The spelling of 12522744550 in words is "twelve billion, five hundred twenty-two million, seven hundred forty-four thousand, five hundred fifty".