235525140 has 144 divisors (see below), whose sum is σ = 796461120. Its totient is φ = 55987200.

The previous prime is 235525139. The next prime is 235525189. The reversal of 235525140 is 41525532.

It is a happy number.

235525140 is a `hidden beast` number, since 23 + 552 + 51 + 40 = 666.

235525140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56115 + ... + 60165.

It is an arithmetic number, because the mean of its divisors is an integer number (5530980).

Almost surely, 2^235525140 is an apocalyptic number.

235525140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 235525140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398230560).

235525140 is an abundant number, since it is smaller than the sum of its proper divisors (560935980).

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

235525140 is a wasteful number, since it uses less digits than its factorization.

235525140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4102 (or 4097 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 235525140 is about 15346.8283368258. The cubic root of 235525140 is about 617.5599028361.

It can be divided in two parts, 2355 and 25140, that added together give a triangular number (27495 = T₂₃₄).

The spelling of 235525140 in words is "two hundred thirty-five million, five hundred twenty-five thousand, one hundred forty".