25913273 has 4 divisors (see below), whose sum is σ = 26142708. Its totient is φ = 25683840.

The previous prime is 25913263. The next prime is 25913281. The reversal of 25913273 is 37231952.

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 4826809 + 21086464 = 2197^2 + 4592^2 .

It is a cyclic number.

It is not a de Polignac number, because 25913273 - 2⁴ = 25913257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25913233) 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, 114548 + ... + 114773.

It is an arithmetic number, because the mean of its divisors is an integer number (6535677).

Almost surely, 2^25913273 is an apocalyptic number.

It is an amenable number.

25913273 is a deficient number, since it is larger than the sum of its proper divisors (229435).

25913273 is a wasteful number, since it uses less digits than its factorization.

25913273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229434.

The product of its digits is 11340, while the sum is 32.

The square root of 25913273 is about 5090.5081278788. The cubic root of 25913273 is about 295.9198445307.

The spelling of 25913273 in words is "twenty-five million, nine hundred thirteen thousand, two hundred seventy-three".