2151725651 has 8 divisors (see below), whose sum is σ = 2187736464. Its totient is φ = 2115738720.

The previous prime is 2151725629. The next prime is 2151725657. The reversal of 2151725651 is 1565271512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151725651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151725657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353405 + ... + 359441.

It is an arithmetic number, because the mean of its divisors is an integer number (273467058).

Almost surely, 2^2151725651 is an apocalyptic number.

2151725651 is a deficient number, since it is larger than the sum of its proper divisors (36010813).

2151725651 is an equidigital number, since it uses as much as digits as its factorization.

2151725651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11941.

The product of its digits is 21000, while the sum is 35.

The square root of 2151725651 is about 46386.6969184054. The cubic root of 2151725651 is about 1291.0080958796.

The spelling of 2151725651 in words is "two billion, one hundred fifty-one million, seven hundred twenty-five thousand, six hundred fifty-one".