25103142 has 64 divisors (see below), whose sum is σ = 60192000. Its totient is φ = 7729344.

The previous prime is 25103129. The next prime is 25103159. The reversal of 25103142 is 24130152.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43834 + ... + 44402.

It is an arithmetic number, because the mean of its divisors is an integer number (940500).

Almost surely, 2^25103142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25103142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30096000).

25103142 is an abundant number, since it is smaller than the sum of its proper divisors (35088858).

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

25103142 is a wasteful number, since it uses less digits than its factorization.

25103142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 25103142 is about 5010.3035836165. The cubic root of 25103142 is about 292.8033407977.

Adding to 25103142 its reverse (24130152), we get a palindrome (49233294).

The spelling of 25103142 in words is "twenty-five million, one hundred three thousand, one hundred forty-two".