15425420 has 24 divisors (see below), whose sum is σ = 32653824. Its totient is φ = 6120576.

The previous prime is 15425413. The next prime is 15425437. The reversal of 15425420 is 2452451.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497 + ... + 5576.

It is an arithmetic number, because the mean of its divisors is an integer number (1360576).

Almost surely, 2^15425420 is an apocalyptic number.

15425420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15425420 is an abundant number, since it is smaller than the sum of its proper divisors (17228404).

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

15425420 is a wasteful number, since it uses less digits than its factorization.

15425420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6209 (or 6207 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 15425420 is about 3927.5208465392. The cubic root of 15425420 is about 248.9310088804.

Adding to 15425420 its reverse (2452451), we get a palindrome (17877871).

The spelling of 15425420 in words is "fifteen million, four hundred twenty-five thousand, four hundred twenty".