25271142 has 32 divisors (see below), whose sum is σ = 55466208. Its totient is φ = 7627776.

The previous prime is 25271137. The next prime is 25271149. The reversal of 25271142 is 24117252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25271149) 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, 1078 + ... + 7190.

It is an arithmetic number, because the mean of its divisors is an integer number (1733319).

Almost surely, 2^25271142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25271142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27733104).

25271142 is an abundant number, since it is smaller than the sum of its proper divisors (30195066).

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

25271142 is a wasteful number, since it uses less digits than its factorization.

25271142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6184.

The product of its digits is 1120, while the sum is 24.

The square root of 25271142 is about 5027.0410780100. The cubic root of 25271142 is about 293.4550737217.

Adding to 25271142 its reverse (24117252), we get a palindrome (49388394).

The spelling of 25271142 in words is "twenty-five million, two hundred seventy-one thousand, one hundred forty-two".