15225470540 has 96 divisors (see below), whose sum is σ = 39060209664. Its totient is φ = 4871370240.

The previous prime is 15225470539. The next prime is 15225470569. The reversal of 15225470540 is 4507452251.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 15225470540.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74357 + ... + 189683.

It is an arithmetic number, because the mean of its divisors is an integer number (406877184).

Almost surely, 2^15225470540 is an apocalyptic number.

15225470540 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 15225470540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19530104832).

15225470540 is an abundant number, since it is smaller than the sum of its proper divisors (23834739124).

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

15225470540 is a wasteful number, since it uses less digits than its factorization.

15225470540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115407 (or 115405 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 35.

The spelling of 15225470540 in words is "fifteen billion, two hundred twenty-five million, four hundred seventy thousand, five hundred forty".