25142128 has 40 divisors (see below), whose sum is σ = 55460736. Its totient is φ = 10929600.

The previous prime is 25142107. The next prime is 25142141. The reversal of 25142128 is 82124152.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 943 + ... + 7153.

Almost surely, 2^25142128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25142128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27730368).

25142128 is an abundant number, since it is smaller than the sum of its proper divisors (30318608).

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

25142128 is a wasteful number, since it uses less digits than its factorization.

25142128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6253 (or 6247 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 25142128 is about 5014.1926568492. The cubic root of 25142128 is about 292.9548401164.

The spelling of 25142128 in words is "twenty-five million, one hundred forty-two thousand, one hundred twenty-eight".