25319005 has 4 divisors (see below), whose sum is σ = 30382812. Its totient is φ = 20255200.

The previous prime is 25319003. The next prime is 25319011. The reversal of 25319005 is 50091352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3956121 + 21362884 = 1989^2 + 4622^2 .

It is not a de Polignac number, because 25319005 - 2¹ = 25319003 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 (25319003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2531896 + ... + 2531905.

It is an arithmetic number, because the mean of its divisors is an integer number (7595703).

Almost surely, 2^25319005 is an apocalyptic number.

It is an amenable number.

25319005 is a deficient number, since it is larger than the sum of its proper divisors (5063807).

25319005 is an equidigital number, since it uses as much as digits as its factorization.

25319005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5063806.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 25319005 is about 5031.7993799435. The cubic root of 25319005 is about 293.6402227497.

The spelling of 25319005 in words is "twenty-five million, three hundred nineteen thousand, five".