2104121525 has 24 divisors (see below), whose sum is σ = 2860680000. Its totient is φ = 1522540800.

The previous prime is 2104121483. The next prime is 2104121527. The reversal of 2104121525 is 5251214012.

It is not a de Polignac number, because 2104121525 - 2¹² = 2104117429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2104121525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104121527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35501 + ... + 73949.

It is an arithmetic number, because the mean of its divisors is an integer number (119195000).

Almost surely, 2^2104121525 is an apocalyptic number.

2104121525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2104121525 is a deficient number, since it is larger than the sum of its proper divisors (756558475).

2104121525 is a wasteful number, since it uses less digits than its factorization.

2104121525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38669 (or 38664 counting only the distinct ones).

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

The square root of 2104121525 is about 45870.7044310418. The cubic root of 2104121525 is about 1281.4163856098.

Adding to 2104121525 its reverse (5251214012), we get a palindrome (7355335537).

The spelling of 2104121525 in words is "two billion, one hundred four million, one hundred twenty-one thousand, five hundred twenty-five".