35638425 has 18 divisors (see below), whose sum is σ = 63832782. Its totient is φ = 19007040.

The previous prime is 35638417. The next prime is 35638429. The reversal of 35638425 is 52483653.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10478169 + 25160256 = 3237^2 + 5016^2 .

It is not a de Polignac number, because 35638425 - 2³ = 35638417 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 35638425.

It is not an unprimeable number, because it can be changed into a prime (35638429) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 78972 + ... + 79421.

Almost surely, 2^35638425 is an apocalyptic number.

It is an amenable number.

35638425 is a deficient number, since it is larger than the sum of its proper divisors (28194357).

35638425 is a wasteful number, since it uses less digits than its factorization.

35638425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158409 (or 158401 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 35638425 is about 5969.7927099691. The cubic root of 35638425 is about 329.0835453920.

It can be divided in two parts, 356384 and 25, that added together give a square (356409 = 597²).

The spelling of 35638425 in words is "thirty-five million, six hundred thirty-eight thousand, four hundred twenty-five".