215225536405 has 16 divisors (see below), whose sum is σ = 284539402368. Its totient is φ = 154977880000.

The previous prime is 215225536399. The next prime is 215225536433. The reversal of 215225536405 is 504635522512.

It is not a de Polignac number, because 215225536405 - 2³ = 215225536397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19366681 + ... + 19377790.

It is an arithmetic number, because the mean of its divisors is an integer number (17783712648).

Almost surely, 2^215225536405 is an apocalyptic number.

It is an amenable number.

215225536405 is a deficient number, since it is larger than the sum of its proper divisors (69313865963).

215225536405 is a wasteful number, since it uses less digits than its factorization.

215225536405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38744588.

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 215225536405 in words is "two hundred fifteen billion, two hundred twenty-five million, five hundred thirty-six thousand, four hundred five".