12521200554 has 24 divisors (see below), whose sum is σ = 27456129792. Its totient is φ = 4123447080.

The previous prime is 12521200537. The next prime is 12521200561. The reversal of 12521200554 is 45500212521.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4189002 + ... + 4191989.

It is an arithmetic number, because the mean of its divisors is an integer number (1144005408).

Almost surely, 2^12521200554 is an apocalyptic number.

12521200554 is an abundant number, since it is smaller than the sum of its proper divisors (14934929238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12521200554 is a wasteful number, since it uses less digits than its factorization.

12521200554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8381082 (or 8381079 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 12521200554 in words is "twelve billion, five hundred twenty-one million, two hundred thousand, five hundred fifty-four".