2155532124125 has 32 divisors (see below), whose sum is σ = 2711146419072. Its totient is φ = 1710950121600.

The previous prime is 2155532124113. The next prime is 2155532124167. The reversal of 2155532124125 is 5214212355512.

It is not a de Polignac number, because 2155532124125 - 2⁶ = 2155532124061 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 31 ways as a sum of consecutive naturals, for example, 33995702 + ... + 34059048.

It is an arithmetic number, because the mean of its divisors is an integer number (84723325596).

Almost surely, 2^{2155532124125} is an apocalyptic number.

2155532124125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2155532124125 is a deficient number, since it is larger than the sum of its proper divisors (555614294947).

2155532124125 is a wasteful number, since it uses less digits than its factorization.

2155532124125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65486 (or 65476 counting only the distinct ones).

The product of its digits is 120000, while the sum is 38.

Adding to 2155532124125 its reverse (5214212355512), we get a palindrome (7369744479637).

The spelling of 2155532124125 in words is "two trillion, one hundred fifty-five billion, five hundred thirty-two million, one hundred twenty-four thousand, one hundred twenty-five".