25642342 has 16 divisors (see below), whose sum is σ = 42038352. Its totient is φ = 11633920.

The previous prime is 25642327. The next prime is 25642399. The reversal of 25642342 is 24324652.

It is a self number, because there is not a number n which added to its sum of digits gives 25642342.

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, 20898 + ... + 22090.

It is an arithmetic number, because the mean of its divisors is an integer number (2627397).

Almost surely, 2^25642342 is an apocalyptic number.

25642342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25642342 is a deficient number, since it is larger than the sum of its proper divisors (16396010).

25642342 is a wasteful number, since it uses less digits than its factorization.

25642342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183.

The product of its digits is 11520, while the sum is 28.

The square root of 25642342 is about 5063.8268137842. The cubic root of 25642342 is about 294.8849192031.

Adding to 25642342 its reverse (24324652), we get a palindrome (49966994).

The spelling of 25642342 in words is "twenty-five million, six hundred forty-two thousand, three hundred forty-two".