25397842 has 8 divisors (see below), whose sum is σ = 39753216. Its totient is φ = 12146772.

The previous prime is 25397839. The next prime is 25397863. The reversal of 25397842 is 24879352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 25397795 and 25397804.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276018 + ... + 276109.

It is an arithmetic number, because the mean of its divisors is an integer number (4969152).

Almost surely, 2^25397842 is an apocalyptic number.

25397842 is a deficient number, since it is larger than the sum of its proper divisors (14355374).

25397842 is a wasteful number, since it uses less digits than its factorization.

25397842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552152.

The product of its digits is 120960, while the sum is 40.

The square root of 25397842 is about 5039.6271687497. The cubic root of 25397842 is about 293.9446808470.

The spelling of 25397842 in words is "twenty-five million, three hundred ninety-seven thousand, eight hundred forty-two".