12521525202 has 48 divisors (see below), whose sum is σ = 28989469080. Its totient is φ = 3892271616.

The previous prime is 12521525143. The next prime is 12521525213. The reversal of 12521525202 is 20252512521.

It is a happy number.

12521525202 is a `hidden beast` number, since 125 + 2 + 15 + 2 + 520 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9876583161 + 2644942041 = 99381^2 + 51429^2 .

It is a super-2 number, since 2×12521525202² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154353 + ... + 221060.

Almost surely, 2^12521525202 is an apocalyptic number.

12521525202 is an abundant number, since it is smaller than the sum of its proper divisors (16467943878).

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

12521525202 is a wasteful number, since it uses less digits than its factorization.

12521525202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375547 (or 375544 counting only the distinct ones).

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

The spelling of 12521525202 in words is "twelve billion, five hundred twenty-one million, five hundred twenty-five thousand, two hundred two".