25145142 has 64 divisors (see below), whose sum is σ = 59076864. Its totient is φ = 7050240.

The previous prime is 25145129. The next prime is 25145143. The reversal of 25145142 is 24154152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25145143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81753 + ... + 82059.

It is an arithmetic number, because the mean of its divisors is an integer number (923076).

Almost surely, 2^25145142 is an apocalyptic number.

25145142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 25145142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29538432).

25145142 is an abundant number, since it is smaller than the sum of its proper divisors (33931722).

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

25145142 is a wasteful number, since it uses less digits than its factorization.

25145142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413.

The product of its digits is 1600, while the sum is 24.

The square root of 25145142 is about 5014.4931947306. The cubic root of 25145142 is about 292.9665459752.

Adding to 25145142 its reverse (24154152), we get a palindrome (49299294).

The spelling of 25145142 in words is "twenty-five million, one hundred forty-five thousand, one hundred forty-two".