15250001440 has 24 divisors (see below), whose sum is σ = 36028128780. Its totient is φ = 6100000512.

The previous prime is 15250001401. The next prime is 15250001449. The reversal of 15250001440 is 4410005251.

It can be written as a sum of positive squares in 2 ways, for example, as 15100477456 + 149523984 = 122884^2 + 12228^2 .

It is not an unprimeable number, because it can be changed into a prime (15250001449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47656095 + ... + 47656414.

Almost surely, 2^15250001440 is an apocalyptic number.

15250001440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15250001440 is an abundant number, since it is smaller than the sum of its proper divisors (20778127340).

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

15250001440 is an equidigital number, since it uses as much as digits as its factorization.

15250001440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95312524 (or 95312516 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 15250001440 its reverse (4410005251), we get a palindrome (19660006691).

The spelling of 15250001440 in words is "fifteen billion, two hundred fifty million, one thousand, four hundred forty".