15225554420 has 12 divisors (see below), whose sum is σ = 31973664324. Its totient is φ = 6090221760.

The previous prime is 15225554417. The next prime is 15225554441. The reversal of 15225554420 is 2445552251.

15225554420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6414728464 + 8810825956 = 80092^2 + 93866^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380638841 + ... + 380638880.

It is an arithmetic number, because the mean of its divisors is an integer number (2664472027).

Almost surely, 2^15225554420 is an apocalyptic number.

15225554420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15225554420 is an abundant number, since it is smaller than the sum of its proper divisors (16748109904).

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

15225554420 is a wasteful number, since it uses less digits than its factorization.

15225554420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761277730 (or 761277728 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 15225554420 in words is "fifteen billion, two hundred twenty-five million, five hundred fifty-four thousand, four hundred twenty".