15125245440 has 160 divisors (see below), whose sum is σ = 51198285600. Its totient is φ = 3796107264.

The previous prime is 15125245411. The next prime is 15125245463. The reversal of 15125245440 is 4454252151.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72636 + ... + 188484.

It is an arithmetic number, because the mean of its divisors is an integer number (319989285).

Almost surely, 2^15125245440 is an apocalyptic number.

15125245440 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 15125245440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25599142800).

15125245440 is an abundant number, since it is smaller than the sum of its proper divisors (36073040160).

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

15125245440 is a wasteful number, since it uses less digits than its factorization.

15125245440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115892 (or 115876 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 33.

Adding to 15125245440 its reverse (4454252151), we get a palindrome (19579497591).

The spelling of 15125245440 in words is "fifteen billion, one hundred twenty-five million, two hundred forty-five thousand, four hundred forty".