25425457 has 4 divisors (see below), whose sum is σ = 25496640. Its totient is φ = 25354276.

The previous prime is 25425451. The next prime is 25425461. The reversal of 25425457 is 75452452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25425457 - 2⁷ = 25425329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25425451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35053 + ... + 35770.

It is an arithmetic number, because the mean of its divisors is an integer number (6374160).

Almost surely, 2^25425457 is an apocalyptic number.

It is an amenable number.

25425457 is a deficient number, since it is larger than the sum of its proper divisors (71183).

25425457 is an equidigital number, since it uses as much as digits as its factorization.

25425457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71182.

The product of its digits is 56000, while the sum is 34.

The square root of 25425457 is about 5042.3662104215. The cubic root of 25425457 is about 294.0511773250.

The spelling of 25425457 in words is "twenty-five million, four hundred twenty-five thousand, four hundred fifty-seven".