2115525455252 has 24 divisors (see below), whose sum is σ = 4040129593920. Its totient is φ = 961269341760.

The previous prime is 2115525455221. The next prime is 2115525455257. The reversal of 2115525455252 is 2525545255112.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115525455257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8199977 + ... + 8454032.

It is an arithmetic number, because the mean of its divisors is an integer number (168338733080).

Almost surely, 2^{2115525455252} is an apocalyptic number.

2115525455252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2115525455252 is a deficient number, since it is larger than the sum of its proper divisors (1924604138668).

2115525455252 is a wasteful number, since it uses less digits than its factorization.

2115525455252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16656911 (or 16656909 counting only the distinct ones).

The product of its digits is 1000000, while the sum is 44.

The spelling of 2115525455252 in words is "two trillion, one hundred fifteen billion, five hundred twenty-five million, four hundred fifty-five thousand, two hundred fifty-two".