2145251015 has 8 divisors (see below), whose sum is σ = 2585643120. Its totient is φ = 1708639552.

The previous prime is 2145251011. The next prime is 2145251021. The reversal of 2145251015 is 5101525412.

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 2145251015 - 2² = 2145251011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145251011) 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, 943910 + ... + 946179.

It is an arithmetic number, because the mean of its divisors is an integer number (323205390).

Almost surely, 2^2145251015 is an apocalyptic number.

2145251015 is a deficient number, since it is larger than the sum of its proper divisors (440392105).

2145251015 is a wasteful number, since it uses less digits than its factorization.

2145251015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890321.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 2145251015 is about 46316.8545456187. The cubic root of 2145251015 is about 1289.7118950778.

Adding to 2145251015 its reverse (5101525412), we get a palindrome (7246776427).

The spelling of 2145251015 in words is "two billion, one hundred forty-five million, two hundred fifty-one thousand, fifteen".