25425537 has 8 divisors (see below), whose sum is σ = 34043520. Its totient is φ = 16878960.

The previous prime is 25425529. The next prime is 25425539. The reversal of 25425537 is 73552452.

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

It is not a de Polignac number, because 25425537 - 2³ = 25425529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25425498 and 25425507.

It is not an unprimeable number, because it can be changed into a prime (25425539) 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, 17014 + ... + 18447.

It is an arithmetic number, because the mean of its divisors is an integer number (4255440).

Almost surely, 2^25425537 is an apocalyptic number.

It is an amenable number.

25425537 is a deficient number, since it is larger than the sum of its proper divisors (8617983).

25425537 is a wasteful number, since it uses less digits than its factorization.

25425537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35703.

The product of its digits is 42000, while the sum is 33.

The square root of 25425537 is about 5042.3741431988. The cubic root of 25425537 is about 294.0514857308.

Adding to 25425537 its reverse (73552452), we get a palindrome (98977989).

The spelling of 25425537 in words is "twenty-five million, four hundred twenty-five thousand, five hundred thirty-seven".