15225406 has 16 divisors (see below), whose sum is σ = 27001440. Its totient is φ = 6300000.

The previous prime is 15225401. The next prime is 15225407. The reversal of 15225406 is 60452251.

15225406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15225401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18345 + ... + 19156.

It is an arithmetic number, because the mean of its divisors is an integer number (1687590).

Almost surely, 2^15225406 is an apocalyptic number.

15225406 is a deficient number, since it is larger than the sum of its proper divisors (11776034).

15225406 is a wasteful number, since it uses less digits than its factorization.

15225406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37539.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 15225406 is about 3901.9746283132. The cubic root of 15225406 is about 247.8504018868.

Adding to 15225406 its reverse (60452251), we get a palindrome (75677657).

The spelling of 15225406 in words is "fifteen million, two hundred twenty-five thousand, four hundred six".