8142525 has 30 divisors (see below), whose sum is σ = 15086522. Its totient is φ = 4341600.

The previous prime is 8142517. The next prime is 8142527. The reversal of 8142525 is 5252418.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2916 + 8139609 = 54^2 + 2853^2 .

It is not a de Polignac number, because 8142525 - 2³ = 8142517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8142527) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 15 + ... + 4035.

Almost surely, 2^8142525 is an apocalyptic number.

It is an amenable number.

8142525 is a deficient number, since it is larger than the sum of its proper divisors (6943997).

8142525 is a wasteful number, since it uses less digits than its factorization.

8142525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043 (or 4029 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 8142525 is about 2853.5109952478. The cubic root of 8142525 is about 201.1807240695.

The spelling of 8142525 in words is "eight million, one hundred forty-two thousand, five hundred twenty-five".