16525020090 has 16 divisors (see below), whose sum is σ = 39660048288. Its totient is φ = 4406672016.

The previous prime is 16525020023. The next prime is 16525020107. The reversal of 16525020090 is 9002052561.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 550834003 = 16525020090 / (1 + 6 + 5 + 2 + 5 + 0 + 2 + 0 + 0 + 9 + 0).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275416972 + ... + 275417031.

It is an arithmetic number, because the mean of its divisors is an integer number (2478753018).

Almost surely, 2^16525020090 is an apocalyptic number.

16525020090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16525020090 is an abundant number, since it is smaller than the sum of its proper divisors (23135028198).

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

16525020090 is a wasteful number, since it uses less digits than its factorization.

16525020090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550834013.

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 16525020090 in words is "sixteen billion, five hundred twenty-five million, twenty thousand, ninety".