12501244240 has 80 divisors (see below), whose sum is σ = 29947511808. Its totient is φ = 4850628608.

The previous prime is 12501244201. The next prime is 12501244243. The reversal of 12501244240 is 4244210521.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×12501244240² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501244243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410169 + ... + 439591.

Almost surely, 2^12501244240 is an apocalyptic number.

12501244240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12501244240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14973755904).

12501244240 is an abundant number, since it is smaller than the sum of its proper divisors (17446267568).

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

12501244240 is a wasteful number, since it uses less digits than its factorization.

12501244240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29596 (or 29590 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 12501244240 its reverse (4244210521), we get a palindrome (16745454761).

The spelling of 12501244240 in words is "twelve billion, five hundred one million, two hundred forty-four thousand, two hundred forty".