634525 has 12 divisors (see below), whose sum is σ = 833652. Its totient is φ = 477440.

The previous prime is 634523. The next prime is 634531. The reversal of 634525 is 525436.

It can be written as a sum of positive squares in 6 ways, for example, as 29241 + 605284 = 171^2 + 778^2 .

It is not a de Polignac number, because 634525 - 2¹ = 634523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 634525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 322 + ... + 1171.

It is an arithmetic number, because the mean of its divisors is an integer number (69471).

2⁶³⁴⁵²⁵ is an apocalyptic number.

It is an amenable number.

634525 is a deficient number, since it is larger than the sum of its proper divisors (199127).

634525 is a wasteful number, since it uses less digits than its factorization.

634525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1515 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 634525 is about 796.5707752611. The cubic root of 634525 is about 85.9309433014.

The spelling of 634525 in words is "six hundred thirty-four thousand, five hundred twenty-five".