25158427 has 4 divisors (see below), whose sum is σ = 28752496. Its totient is φ = 21564360.

The previous prime is 25158421. The next prime is 25158449. The reversal of 25158427 is 72485152.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25158427 is a prime.

It is a super-2 number, since 2×25158427² = 1265892898228658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25158392 and 25158401.

It is not an unprimeable number, because it can be changed into a prime (25158421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1797024 + ... + 1797037.

It is an arithmetic number, because the mean of its divisors is an integer number (7188124).

Almost surely, 2^25158427 is an apocalyptic number.

25158427 is a deficient number, since it is larger than the sum of its proper divisors (3594069).

25158427 is an equidigital number, since it uses as much as digits as its factorization.

25158427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3594068.

The product of its digits is 22400, while the sum is 34.

The square root of 25158427 is about 5015.8176800996. The cubic root of 25158427 is about 293.0181314906.

The spelling of 25158427 in words is "twenty-five million, one hundred fifty-eight thousand, four hundred twenty-seven".