15825242 has 16 divisors (see below), whose sum is σ = 25626240. Its totient is φ = 7306992.

The previous prime is 15825241. The next prime is 15825263. The reversal of 15825242 is 24252851.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (15825241) 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, 4598 + ... + 7265.

It is an arithmetic number, because the mean of its divisors is an integer number (1601640).

Almost surely, 2^15825242 is an apocalyptic number.

15825242 is a deficient number, since it is larger than the sum of its proper divisors (9800998).

15825242 is a wasteful number, since it uses less digits than its factorization.

15825242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11917.

The product of its digits is 6400, while the sum is 29.

The square root of 15825242 is about 3978.0952728661. The cubic root of 15825242 is about 251.0634274080.

The spelling of 15825242 in words is "fifteen million, eight hundred twenty-five thousand, two hundred forty-two".