25490273 has 4 divisors (see below), whose sum is σ = 25564080. Its totient is φ = 25416468.

The previous prime is 25490263. The next prime is 25490281. The reversal of 25490273 is 37209452.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25490273 - 2¹⁸ = 25228129 is a prime.

It is a super-2 number, since 2×25490273² = 1299508035229058, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25490263) 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, 36383 + ... + 37076.

It is an arithmetic number, because the mean of its divisors is an integer number (6391020).

Almost surely, 2^25490273 is an apocalyptic number.

It is an amenable number.

25490273 is a deficient number, since it is larger than the sum of its proper divisors (73807).

25490273 is an equidigital number, since it uses as much as digits as its factorization.

25490273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73806.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 25490273 is about 5048.7892608030. The cubic root of 25490273 is about 294.3008358778.

The spelling of 25490273 in words is "twenty-five million, four hundred ninety thousand, two hundred seventy-three".