25294140 has 96 divisors (see below), whose sum is σ = 81285120. Its totient is φ = 6523200.

The previous prime is 25294133. The next prime is 25294163. The reversal of 25294140 is 4149252.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15985 + ... + 17495.

It is an arithmetic number, because the mean of its divisors is an integer number (846720).

Almost surely, 2^25294140 is an apocalyptic number.

25294140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25294140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40642560).

25294140 is an abundant number, since it is smaller than the sum of its proper divisors (55990980).

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

25294140 is a wasteful number, since it uses less digits than its factorization.

25294140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560 (or 1552 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 25294140 is about 5029.3279869183. The cubic root of 25294140 is about 293.5440663171.

The spelling of 25294140 in words is "twenty-five million, two hundred ninety-four thousand, one hundred forty".