16525980 has 36 divisors (see below), whose sum is σ = 50129352. Its totient is φ = 4406880.

The previous prime is 16525963. The next prime is 16526009. The reversal of 16525980 is 8952561.

It is a happy number.

16525980 is a `hidden beast` number, since 1 + 65 + 2 + 598 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45726 + ... + 46085.

It is an arithmetic number, because the mean of its divisors is an integer number (1392482).

Almost surely, 2^16525980 is an apocalyptic number.

16525980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16525980 is an abundant number, since it is smaller than the sum of its proper divisors (33603372).

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

16525980 is a wasteful number, since it uses less digits than its factorization.

16525980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91826 (or 91821 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 16525980 is about 4065.2158614273. The cubic root of 16525980 is about 254.7157154809.

The spelling of 16525980 in words is "sixteen million, five hundred twenty-five thousand, nine hundred eighty".