2125726653 has 4 divisors (see below), whose sum is σ = 2834302208. Its totient is φ = 1417151100.

The previous prime is 2125726643. The next prime is 2125726657. The reversal of 2125726653 is 3566275212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2125726653 - 2⁸ = 2125726397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125726657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354287773 + ... + 354287778.

It is an arithmetic number, because the mean of its divisors is an integer number (708575552).

Almost surely, 2^2125726653 is an apocalyptic number.

It is an amenable number.

2125726653 is a deficient number, since it is larger than the sum of its proper divisors (708575555).

2125726653 is an equidigital number, since it uses as much as digits as its factorization.

2125726653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708575554.

The product of its digits is 151200, while the sum is 39.

The square root of 2125726653 is about 46105.6032711860. The cubic root of 2125726653 is about 1285.7873221173.

The spelling of 2125726653 in words is "two billion, one hundred twenty-five million, seven hundred twenty-six thousand, six hundred fifty-three".