2151725650 has 24 divisors (see below), whose sum is σ = 4005457920. Its totient is φ = 859991760.

The previous prime is 2151725629. The next prime is 2151725657. The reversal of 2151725650 is 565271512.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47127 + ... + 80773.

It is an arithmetic number, because the mean of its divisors is an integer number (166894080).

Almost surely, 2^2151725650 is an apocalyptic number.

2151725650 is a deficient number, since it is larger than the sum of its proper divisors (1853732270).

2151725650 is a wasteful number, since it uses less digits than its factorization.

2151725650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34938 (or 34933 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 2151725650 is about 46386.6969076264. The cubic root of 2151725650 is about 1291.0080956796.

The spelling of 2151725650 in words is "two billion, one hundred fifty-one million, seven hundred twenty-five thousand, six hundred fifty".