2142101525 has 12 divisors (see below), whose sum is σ = 2656898400. Its totient is φ = 1713234480.

The previous prime is 2142101513. The next prime is 2142101543. The reversal of 2142101525 is 5251012412.

It is not a de Polignac number, because 2142101525 - 2⁴ = 2142101509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2142101525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114266 + ... + 131684.

It is an arithmetic number, because the mean of its divisors is an integer number (221408200).

Almost surely, 2^2142101525 is an apocalyptic number.

2142101525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2142101525 is a deficient number, since it is larger than the sum of its proper divisors (514796875).

2142101525 is a wasteful number, since it uses less digits than its factorization.

2142101525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22348 (or 22343 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 2142101525 is about 46282.8426633456. The cubic root of 2142101525 is about 1289.0804345298.

Adding to 2142101525 its reverse (5251012412), we get a palindrome (7393113937).

The spelling of 2142101525 in words is "two billion, one hundred forty-two million, one hundred one thousand, five hundred twenty-five".