15425442 has 12 divisors (see below), whose sum is σ = 33421830. Its totient is φ = 5141808.

The previous prime is 15425437. The next prime is 15425453. The reversal of 15425442 is 24452451.

It can be written as a sum of positive squares in only one way, i.e., 15280281 + 145161 = 3909^2 + 381^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 428467 + ... + 428502.

Almost surely, 2^15425442 is an apocalyptic number.

15425442 is an abundant number, since it is smaller than the sum of its proper divisors (17996388).

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

15425442 is a wasteful number, since it uses less digits than its factorization.

15425442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856977 (or 856974 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 15425442 is about 3927.5236472872. The cubic root of 15425442 is about 248.9311272236.

Adding to 15425442 its reverse (24452451), we get a palindrome (39877893).

The spelling of 15425442 in words is "fifteen million, four hundred twenty-five thousand, four hundred forty-two".