634684525 has 6 divisors (see below), whose sum is σ = 787008842. Its totient is φ = 507747600.

The previous prime is 634684507. The next prime is 634684541. The reversal of 634684525 is 525486436.

It can be written as a sum of positive squares in 3 ways, for example, as 202834564 + 431849961 = 14242^2 + 20781^2 .

It is not a de Polignac number, because 634684525 - 2⁷ = 634684397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12693666 + ... + 12693715.

Almost surely, 2^634684525 is an apocalyptic number.

It is an amenable number.

634684525 is a deficient number, since it is larger than the sum of its proper divisors (152324317).

634684525 is a wasteful number, since it uses less digits than its factorization.

634684525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25387391 (or 25387386 counting only the distinct ones).

The product of its digits is 691200, while the sum is 43.

The square root of 634684525 is about 25192.9459373055. The cubic root of 634684525 is about 859.3814395551.

It can be divided in two parts, 634684 and 525, that added together give a square (635209 = 797²).

The spelling of 634684525 in words is "six hundred thirty-four million, six hundred eighty-four thousand, five hundred twenty-five".