2158515025 has 12 divisors (see below), whose sum is σ = 2710441600. Its totient is φ = 1704952080.

The previous prime is 2158514929. The next prime is 2158515049. The reversal of 2158515025 is 5205158512.

It is not a de Polignac number, because 2158515025 - 2¹¹ = 2158512977 is a prime.

It is a super-2 number, since 2×2158515025² = 9318374226301501250, which contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 544485 + ... + 548434.

Almost surely, 2^2158515025 is an apocalyptic number.

2158515025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2158515025 is a deficient number, since it is larger than the sum of its proper divisors (551926575).

2158515025 is a wasteful number, since it uses less digits than its factorization.

2158515025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093008 (or 1093003 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 34.

The square root of 2158515025 is about 46459.8216204066. The cubic root of 2158515025 is about 1292.3645163256.

The spelling of 2158515025 in words is "two billion, one hundred fifty-eight million, five hundred fifteen thousand, twenty-five".