25115273 has 4 divisors (see below), whose sum is σ = 26592660. Its totient is φ = 23637888.

The previous prime is 25115263. The next prime is 25115317. The reversal of 25115273 is 37251152.

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 18292729 + 6822544 = 4277^2 + 2612^2 .

It is not a de Polignac number, because 25115273 - 2⁴ = 25115257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25115213) 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, 738668 + ... + 738701.

It is an arithmetic number, because the mean of its divisors is an integer number (6648165).

Almost surely, 2^25115273 is an apocalyptic number.

It is an amenable number.

25115273 is a deficient number, since it is larger than the sum of its proper divisors (1477387).

25115273 is a wasteful number, since it uses less digits than its factorization.

25115273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477386.

The product of its digits is 2100, while the sum is 26.

The square root of 25115273 is about 5011.5140426821. The cubic root of 25115273 is about 292.8504985773.

The spelling of 25115273 in words is "twenty-five million, one hundred fifteen thousand, two hundred seventy-three".