525149 has 4 divisors (see below), whose sum is σ = 533820. Its totient is φ = 516480.

The previous prime is 525143. The next prime is 525157. The reversal of 525149 is 941525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60025 + 465124 = 245^2 + 682^2 .

It is a cyclic number.

It is not a de Polignac number, because 525149 - 2⁸ = 524893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4244 + ... + 4365.

It is an arithmetic number, because the mean of its divisors is an integer number (133455).

2⁵²⁵¹⁴⁹ is an apocalyptic number.

It is an amenable number.

525149 is a deficient number, since it is larger than the sum of its proper divisors (8671).

525149 is an equidigital number, since it uses as much as digits as its factorization.

525149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8670.

The product of its digits is 1800, while the sum is 26.

The square root of 525149 is about 724.6716497835. The cubic root of 525149 is about 80.6790633529.

The spelling of 525149 in words is "five hundred twenty-five thousand, one hundred forty-nine".