25331142 has 32 divisors (see below), whose sum is σ = 55653120. Its totient is φ = 7650720.

The previous prime is 25331129. The next prime is 25331143. The reversal of 25331142 is 24113352.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25331143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2209 + ... + 7452.

It is an arithmetic number, because the mean of its divisors is an integer number (1739160).

Almost surely, 2^25331142 is an apocalyptic number.

25331142 is an abundant number, since it is smaller than the sum of its proper divisors (30321978).

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

25331142 is a wasteful number, since it uses less digits than its factorization.

25331142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9708.

The product of its digits is 720, while the sum is 21.

The square root of 25331142 is about 5033.0052652466. The cubic root of 25331142 is about 293.6871353629.

Adding to 25331142 its reverse (24113352), we get a palindrome (49444494).

The spelling of 25331142 in words is "twenty-five million, three hundred thirty-one thousand, one hundred forty-two".