15403125 has 48 divisors (see below), whose sum is σ = 26998272. Its totient is φ = 7800000.

The previous prime is 15403097. The next prime is 15403151. The reversal of 15403125 is 52130451.

15403125 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15403125 - 2⁵ = 15403093 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 290599 + ... + 290651.

It is an arithmetic number, because the mean of its divisors is an integer number (562464).

Almost surely, 2^15403125 is an apocalyptic number.

15403125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15403125 is a deficient number, since it is larger than the sum of its proper divisors (11595147).

15403125 is an frugal number, since it uses more digits than its factorization.

15403125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 15403125 is about 3924.6815157411. The cubic root of 15403125 is about 248.8110209463.

Adding to 15403125 its reverse (52130451), we get a palindrome (67533576).

The spelling of 15403125 in words is "fifteen million, four hundred three thousand, one hundred twenty-five".