2151725629 has 2 divisors, whose sum is σ = 2151725630. Its totient is φ = 2151725628.

The previous prime is 2151725621. The next prime is 2151725657. The reversal of 2151725629 is 9265271512.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1894860900 + 256864729 = 43530^2 + 16027^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151725629 - 2³ = 2151725621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2151725591 and 2151725600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151725621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075862814 + 1075862815.

It is an arithmetic number, because the mean of its divisors is an integer number (1075862815).

Almost surely, 2^2151725629 is an apocalyptic number.

It is an amenable number.

2151725629 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151725629 is an equidigital number, since it uses as much as digits as its factorization.

2151725629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 40.

The square root of 2151725629 is about 46386.6966812684. The cubic root of 2151725629 is about 1291.0080914797.

The spelling of 2151725629 in words is "two billion, one hundred fifty-one million, seven hundred twenty-five thousand, six hundred twenty-nine".