12635312250 has 128 divisors (see below), whose sum is σ = 34919838720. Its totient is φ = 3017256000.

The previous prime is 12635312243. The next prime is 12635312281. The reversal of 12635312250 is 5221353621.

It is a super-2 number, since 2×12635312250² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 541321 + ... + 564179.

It is an arithmetic number, because the mean of its divisors is an integer number (272811240).

Almost surely, 2^12635312250 is an apocalyptic number.

12635312250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12635312250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17459919360).

12635312250 is an abundant number, since it is smaller than the sum of its proper divisors (22284526470).

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

12635312250 is a wasteful number, since it uses less digits than its factorization.

12635312250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22957 (or 22947 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 12635312250 its reverse (5221353621), we get a palindrome (17856665871).

The spelling of 12635312250 in words is "twelve billion, six hundred thirty-five million, three hundred twelve thousand, two hundred fifty".