1022154111225 has 96 divisors (see below), whose sum is σ = 2141127959040. Its totient is φ = 473613419520.

The previous prime is 1022154111203. The next prime is 1022154111241. The reversal of 1022154111225 is 5221114512201.

1022154111225 is a `hidden beast` number, since 1 + 0 + 2 + 2 + 1 + 541 + 112 + 2 + 5 = 666.

It is not a de Polignac number, because 1022154111225 - 2⁹ = 1022154110713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 3276849 + ... + 3575198.

It is an arithmetic number, because the mean of its divisors is an integer number (22303416240).

Almost surely, 2^{1022154111225} is an apocalyptic number.

1022154111225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1022154111225 is an abundant number, since it is smaller than the sum of its proper divisors (1118973847815).

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

1022154111225 is a wasteful number, since it uses less digits than its factorization.

1022154111225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6852096 (or 6852085 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

Adding to 1022154111225 its reverse (5221114512201), we get a palindrome (6243268623426).

The spelling of 1022154111225 in words is "one trillion, twenty-two billion, one hundred fifty-four million, one hundred eleven thousand, two hundred twenty-five".