25005457 has 8 divisors (see below), whose sum is σ = 25635456. Its totient is φ = 24379632.

The previous prime is 25005443. The next prime is 25005467. The reversal of 25005457 is 75450052.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25005457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25005467) 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, 13563 + ... + 15295.

It is an arithmetic number, because the mean of its divisors is an integer number (3204432).

Almost surely, 2^25005457 is an apocalyptic number.

It is an amenable number.

25005457 is a deficient number, since it is larger than the sum of its proper divisors (629999).

25005457 is a wasteful number, since it uses less digits than its factorization.

25005457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087.

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 25005457 is about 5000.5456702244. The cubic root of 25005457 is about 292.4230474266.

The spelling of 25005457 in words is "twenty-five million, five thousand, four hundred fifty-seven".