12521505001 has 8 divisors (see below), whose sum is σ = 13502008800. Its totient is φ = 11573148960.

The previous prime is 12521504981. The next prime is 12521505019. The reversal of 12521505001 is 10050512521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12521505001 - 2⁷ = 12521504873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12521505071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8036131 + ... + 8037688.

It is an arithmetic number, because the mean of its divisors is an integer number (1687751100).

Almost surely, 2^12521505001 is an apocalyptic number.

It is an amenable number.

12521505001 is a deficient number, since it is larger than the sum of its proper divisors (980503799).

12521505001 is a wasteful number, since it uses less digits than its factorization.

12521505001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16073879.

The product of its (nonzero) digits is 500, while the sum is 22.

The spelling of 12521505001 in words is "twelve billion, five hundred twenty-one million, five hundred five thousand, one".