2158185088225 has 12 divisors (see below), whose sum is σ = 2721507977520. Its totient is φ = 1697284542800.

The previous prime is 2158185088211. The next prime is 2158185088229. The reversal of 2158185088225 is 5228805818512.

It is not a de Polignac number, because 2158185088225 - 2¹⁵ = 2158185055457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2158185088229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 731586691 + ... + 731589640.

It is an arithmetic number, because the mean of its divisors is an integer number (226792331460).

Almost surely, 2^{2158185088225} is an apocalyptic number.

2158185088225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2158185088225 is a deficient number, since it is larger than the sum of its proper divisors (563322889295).

2158185088225 is a wasteful number, since it uses less digits than its factorization.

2158185088225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463176400 (or 1463176395 counting only the distinct ones).

The product of its (nonzero) digits is 4096000, while the sum is 55.

The spelling of 2158185088225 in words is "two trillion, one hundred fifty-eight billion, one hundred eighty-five million, eighty-eight thousand, two hundred twenty-five".