25425237 has 8 divisors (see below), whose sum is σ = 33929536. Its totient is φ = 16935552.

The previous prime is 25425223. The next prime is 25425269. The reversal of 25425237 is 73252452.

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

It is not a de Polignac number, because 25425237 - 2⁷ = 25425109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25425277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1413 + ... + 7269.

It is an arithmetic number, because the mean of its divisors is an integer number (4241192).

Almost surely, 2^25425237 is an apocalyptic number.

It is an amenable number.

25425237 is a deficient number, since it is larger than the sum of its proper divisors (8504299).

25425237 is a wasteful number, since it uses less digits than its factorization.

25425237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7307.

The product of its digits is 16800, while the sum is 30.

The square root of 25425237 is about 5042.3443952194. The cubic root of 25425237 is about 294.0503292060.

Adding to 25425237 its reverse (73252452), we get a palindrome (98677689).

The spelling of 25425237 in words is "twenty-five million, four hundred twenty-five thousand, two hundred thirty-seven".