25250007 has 4 divisors (see below), whose sum is σ = 33666680. Its totient is φ = 16833336.

The previous prime is 25250003. The next prime is 25250033. The reversal of 25250007 is 70005252.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25250007 - 2² = 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4208332 + ... + 4208337.

It is an arithmetic number, because the mean of its divisors is an integer number (8416670).

Almost surely, 2^25250007 is an apocalyptic number.

25250007 is a deficient number, since it is larger than the sum of its proper divisors (8416673).

25250007 is an equidigital number, since it uses as much as digits as its factorization.

25250007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8416672.

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 25250007 is about 5024.9385070864. The cubic root of 25250007 is about 293.3732425325.

Adding to 25250007 its reverse (70005252), we get a palindrome (95255259).

The spelling of 25250007 in words is "twenty-five million, two hundred fifty thousand, seven".