25039427 has 4 divisors (see below), whose sum is σ = 28616496. Its totient is φ = 21462360.

The previous prime is 25039411. The next prime is 25039429. The reversal of 25039427 is 72493052.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25039427 - 2⁴ = 25039411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25039393 and 25039402.

It is not an unprimeable number, because it can be changed into a prime (25039429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1788524 + ... + 1788537.

It is an arithmetic number, because the mean of its divisors is an integer number (7154124).

Almost surely, 2^25039427 is an apocalyptic number.

25039427 is a deficient number, since it is larger than the sum of its proper divisors (3577069).

25039427 is an equidigital number, since it uses as much as digits as its factorization.

25039427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577068.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 25039427 is about 5003.9411467362. The cubic root of 25039427 is about 292.5554067489. Note that the first 3 decimals are identical.

The spelling of 25039427 in words is "twenty-five million, thirty-nine thousand, four hundred twenty-seven".