15143225 has 12 divisors (see below), whose sum is σ = 18836220. Its totient is φ = 12076800.

The previous prime is 15143203. The next prime is 15143239. The reversal of 15143225 is 52234151.

15143225 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 6 ways, for example, as 65536 + 15077689 = 256^2 + 3883^2 .

It is not a de Polignac number, because 15143225 - 2⁸ = 15142969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15143225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9485 + ... + 10965.

It is an arithmetic number, because the mean of its divisors is an integer number (1569685).

Almost surely, 2^15143225 is an apocalyptic number.

It is an amenable number.

15143225 is a deficient number, since it is larger than the sum of its proper divisors (3692995).

15143225 is a wasteful number, since it uses less digits than its factorization.

15143225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900 (or 1895 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 15143225 is about 3891.4296858610. The cubic root of 15143225 is about 247.4036628092.

Adding to 15143225 its reverse (52234151), we get a palindrome (67377376).

The spelling of 15143225 in words is "fifteen million, one hundred forty-three thousand, two hundred twenty-five".