69438125 has 20 divisors (see below), whose sum is σ = 87318924. Its totient is φ = 55200000.

The previous prime is 69438101. The next prime is 69438143. The reversal of 69438125 is 52183496.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 50965321 + 18472804 = 7139^2 + 4298^2 .

It is not a de Polignac number, because 69438125 - 2¹⁰ = 69437101 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 150395 + ... + 150855.

Almost surely, 2^69438125 is an apocalyptic number.

It is an amenable number.

69438125 is a deficient number, since it is larger than the sum of its proper divisors (17880799).

69438125 is an equidigital number, since it uses as much as digits as its factorization.

69438125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722 (or 707 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 69438125 is about 8332.9541580402. The cubic root of 69438125 is about 411.0228772714.

The spelling of 69438125 in words is "sixty-nine million, four hundred thirty-eight thousand, one hundred twenty-five".