525689253 has 6 divisors (see below), whose sum is σ = 759328934. Its totient is φ = 350459496.

The previous prime is 525689251. The next prime is 525689287. The reversal of 525689253 is 352986525.

It can be written as a sum of positive squares in only one way, i.e., 521756964 + 3932289 = 22842^2 + 1983^2 .

It is not a de Polignac number, because 525689253 - 2¹ = 525689251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 525689199 and 525689208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525689251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29204950 + ... + 29204967.

Almost surely, 2^525689253 is an apocalyptic number.

It is an amenable number.

525689253 is a deficient number, since it is larger than the sum of its proper divisors (233639681).

525689253 is a wasteful number, since it uses less digits than its factorization.

525689253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58409923 (or 58409920 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 525689253 is about 22927.9142749619. The cubic root of 525689253 is about 807.0672037196.

The spelling of 525689253 in words is "five hundred twenty-five million, six hundred eighty-nine thousand, two hundred fifty-three".