2170525149 has 24 divisors (see below), whose sum is σ = 3381112280. Its totient is φ = 1333832832.

The previous prime is 2170525141. The next prime is 2170525151. The reversal of 2170525149 is 9415250712.

2170525149 is a `hidden beast` number, since 21 + 70 + 52 + 514 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 630512100 + 1540013049 = 25110^2 + 39243^2 .

It is not a de Polignac number, because 2170525149 - 2³ = 2170525141 is a prime.

It is a super-2 number, since 2×2170525149² = 9422358844882944402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170525141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73107 + ... + 98415.

Almost surely, 2^2170525149 is an apocalyptic number.

It is an amenable number.

2170525149 is a deficient number, since it is larger than the sum of its proper divisors (1210587131).

2170525149 is a wasteful number, since it uses less digits than its factorization.

2170525149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26061 (or 26058 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 2170525149 is about 46588.8951253408. The cubic root of 2170525149 is about 1294.7570190556.

The spelling of 2170525149 in words is "two billion, one hundred seventy million, five hundred twenty-five thousand, one hundred forty-nine".