2125000261 has 8 divisors (see below), whose sum is σ = 2237374880. Its totient is φ = 2012678928.

The previous prime is 2125000247. The next prime is 2125000271. The reversal of 2125000261 is 1620005212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2125000261 - 2²⁷ = 1990782533 is a prime.

It is a super-2 number, since 2×2125000261² = 9031252218500136242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125000271) 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, 88615 + ... + 110011.

It is an arithmetic number, because the mean of its divisors is an integer number (279671860).

Almost surely, 2^2125000261 is an apocalyptic number.

It is an amenable number.

2125000261 is a deficient number, since it is larger than the sum of its proper divisors (112374619).

2125000261 is a wasteful number, since it uses less digits than its factorization.

2125000261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26643.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2125000261 is about 46097.7251174068. The cubic root of 2125000261 is about 1285.6408479648.

Adding to 2125000261 its reverse (1620005212), we get a palindrome (3745005473).

The spelling of 2125000261 in words is "two billion, one hundred twenty-five million, two hundred sixty-one", and thus it is an aban number.