16525420 has 12 divisors (see below), whose sum is σ = 34703424. Its totient is φ = 6610160.

The previous prime is 16525409. The next prime is 16525433. The reversal of 16525420 is 2452561.

16525420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413116 + ... + 413155.

It is an arithmetic number, because the mean of its divisors is an integer number (2891952).

Almost surely, 2^16525420 is an apocalyptic number.

16525420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16525420 is an abundant number, since it is smaller than the sum of its proper divisors (18178004).

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

16525420 is a wasteful number, since it uses less digits than its factorization.

16525420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826280 (or 826278 counting only the distinct ones).

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

The square root of 16525420 is about 4065.1469838125. The cubic root of 16525420 is about 254.7128383462.

Adding to 16525420 its reverse (2452561), we get a palindrome (18977981).

The spelling of 16525420 in words is "sixteen million, five hundred twenty-five thousand, four hundred twenty".