81200625511335 has 32 divisors (see below), whose sum is σ = 142986266419968. Its totient is φ = 39021593157120.

The previous prime is 81200625511333. The next prime is 81200625511463. The reversal of 81200625511335 is 53311552600218.

It is not a de Polignac number, because 81200625511335 - 2¹ = 81200625511333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81200625511333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2177525617 + ... + 2177562906.

It is an arithmetic number, because the mean of its divisors is an integer number (4468320825624).

Almost surely, 2^{81200625511335} is an apocalyptic number.

81200625511335 is a deficient number, since it is larger than the sum of its proper divisors (61785640908633).

81200625511335 is a wasteful number, since it uses less digits than its factorization.

81200625511335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355088655.

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 81200625511335 in words is "eighty-one trillion, two hundred billion, six hundred twenty-five million, five hundred eleven thousand, three hundred thirty-five".