2125801405 has 32 divisors (see below), whose sum is σ = 3160539648. Its totient is φ = 1336608000.

The previous prime is 2125801361. The next prime is 2125801411. The reversal of 2125801405 is 5041085212.

It is a de Polignac number, because none of the positive numbers 2^k-2125801405 is a prime.

It is a super-2 number, since 2×2125801405² = 9038063226999948050, which contains 22 as substring.

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, 53235 + ... + 84175.

It is an arithmetic number, because the mean of its divisors is an integer number (98766864).

Almost surely, 2^2125801405 is an apocalyptic number.

It is an amenable number.

2125801405 is a deficient number, since it is larger than the sum of its proper divisors (1034738243).

2125801405 is a wasteful number, since it uses less digits than its factorization.

2125801405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31117.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 2125801405 is about 46106.4139247459. The cubic root of 2125801405 is about 1285.8023936768.

Adding to 2125801405 its reverse (5041085212), we get a palindrome (7166886617).

The spelling of 2125801405 in words is "two billion, one hundred twenty-five million, eight hundred one thousand, four hundred five".