35631225 has 48 divisors (see below), whose sum is σ = 74816640. Its totient is φ = 16286400.

The previous prime is 35631223. The next prime is 35631229. The reversal of 35631225 is 52213653.

35631225 is a `hidden beast` number, since 3 + 5 + 631 + 2 + 25 = 666.

It is not a de Polignac number, because 35631225 - 2¹ = 35631223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35631223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 955 + ... + 8495.

It is an arithmetic number, because the mean of its divisors is an integer number (1558680).

Almost surely, 2^35631225 is an apocalyptic number.

35631225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

35631225 is an abundant number, since it is smaller than the sum of its proper divisors (39185415).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

35631225 is a wasteful number, since it uses less digits than its factorization.

35631225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7567 (or 7556 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 35631225 is about 5969.1896434943. The cubic root of 35631225 is about 329.0613824119.

Adding to 35631225 its reverse (52213653), we get a palindrome (87844878).

The spelling of 35631225 in words is "thirty-five million, six hundred thirty-one thousand, two hundred twenty-five".