25565042 has 8 divisors (see below), whose sum is σ = 40603356. Its totient is φ = 12030592.

The previous prime is 25565021. The next prime is 25565053. The reversal of 25565042 is 24056552.

It can be written as a sum of positive squares in 2 ways, for example, as 25512601 + 52441 = 5051^2 + 229^2 .

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 = 25564996 and 25565014.

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, 375923 + ... + 375990.

Almost surely, 2^25565042 is an apocalyptic number.

25565042 is a deficient number, since it is larger than the sum of its proper divisors (15038314).

25565042 is a wasteful number, since it uses less digits than its factorization.

25565042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751932.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 25565042 is about 5056.1884854107. The cubic root of 25565042 is about 294.5883063090.

The spelling of 25565042 in words is "twenty-five million, five hundred sixty-five thousand, forty-two".