216446156025 has 96 divisors (see below), whose sum is σ = 413578814976. Its totient is φ = 98716800000.

The previous prime is 216446155987. The next prime is 216446156123. The reversal of 216446156025 is 520651644612.

It is not a de Polignac number, because 216446156025 - 2¹¹ = 216446153977 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 38299450 + ... + 38305100.

It is an arithmetic number, because the mean of its divisors is an integer number (4308112656).

Almost surely, 2^216446156025 is an apocalyptic number.

216446156025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216446156025 is a deficient number, since it is larger than the sum of its proper divisors (197132658951).

216446156025 is a wasteful number, since it uses less digits than its factorization.

216446156025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8423 (or 8418 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 216446156025 in words is "two hundred sixteen billion, four hundred forty-six million, one hundred fifty-six thousand, twenty-five".