25250005 has 8 divisors (see below), whose sum is σ = 33054624. Its totient is φ = 18363600.

The previous prime is 25250003. The next prime is 25250033. The reversal of 25250005 is 50005252.

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

It is not a de Polignac number, because 25250005 - 2¹ = 25250003 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 (25250003) 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, 229491 + ... + 229600.

It is an arithmetic number, because the mean of its divisors is an integer number (4131828).

Almost surely, 2^25250005 is an apocalyptic number.

It is an amenable number.

25250005 is a deficient number, since it is larger than the sum of its proper divisors (7804619).

25250005 is a wasteful number, since it uses less digits than its factorization.

25250005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459107.

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 25250005 is about 5024.9383080790. The cubic root of 25250005 is about 293.3732347867.

Adding to 25250005 its reverse (50005252), we get a palindrome (75255257).

The spelling of 25250005 in words is "twenty-five million, two hundred fifty thousand, five".