25057449 has 12 divisors (see below), whose sum is σ = 36290436. Its totient is φ = 16660512.

The previous prime is 25057429. The next prime is 25057471. The reversal of 25057449 is 94475052.

It can be written as a sum of positive squares in 2 ways, for example, as 19079424 + 5978025 = 4368^2 + 2445^2 .

It is not a de Polignac number, because 25057449 - 2⁹ = 25056937 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25057429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67 + ... + 7079.

It is an arithmetic number, because the mean of its divisors is an integer number (3024203).

Almost surely, 2^25057449 is an apocalyptic number.

It is an amenable number.

25057449 is a deficient number, since it is larger than the sum of its proper divisors (11232987).

25057449 is a wasteful number, since it uses less digits than its factorization.

25057449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7416 (or 7413 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 25057449 is about 5005.7416033990. The cubic root of 25057449 is about 292.6255783375.

The spelling of 25057449 in words is "twenty-five million, fifty-seven thousand, four hundred forty-nine".