16240425 has 24 divisors (see below), whose sum is σ = 27200640. Its totient is φ = 8548800.

The previous prime is 16240417. The next prime is 16240429. The reversal of 16240425 is 52404261.

It is not a de Polignac number, because 16240425 - 2³ = 16240417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16240395 and 16240404.

It is not an unprimeable number, because it can be changed into a prime (16240429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4555 + ... + 7295.

It is an arithmetic number, because the mean of its divisors is an integer number (1133360).

Almost surely, 2^16240425 is an apocalyptic number.

16240425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16240425 is a deficient number, since it is larger than the sum of its proper divisors (10960215).

16240425 is a wasteful number, since it uses less digits than its factorization.

16240425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833 (or 2828 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 16240425 is about 4029.9410665666. The cubic root of 16240425 is about 253.2400924561.

Adding to 16240425 its reverse (52404261), we get a palindrome (68644686).

It can be divided in two parts, 1 and 6240425, that added together give a palindrome (6240426).

The spelling of 16240425 in words is "sixteen million, two hundred forty thousand, four hundred twenty-five".