25740342 has 40 divisors (see below), whose sum is σ = 59677200. Its totient is φ = 8282736.

The previous prime is 25740331. The next prime is 25740347. The reversal of 25740342 is 24304752.

25740342 is a `hidden beast` number, since 257 + 403 + 4 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25740347) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1959 + ... + 7437.

It is an arithmetic number, because the mean of its divisors is an integer number (1491930).

Almost surely, 2^25740342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25740342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29838600).

25740342 is an abundant number, since it is smaller than the sum of its proper divisors (33936858).

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

25740342 is a wasteful number, since it uses less digits than its factorization.

25740342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5522 (or 5513 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 25740342 is about 5073.4940622809. The cubic root of 25740342 is about 295.2601057463.

The spelling of 25740342 in words is "twenty-five million, seven hundred forty thousand, three hundred forty-two".