25245437 has 12 divisors (see below), whose sum is σ = 29924316. Its totient is φ = 21228480.

The previous prime is 25245431. The next prime is 25245491. The reversal of 25245437 is 73454252.

It can be written as a sum of positive squares in 2 ways, for example, as 7722841 + 17522596 = 2779^2 + 4186^2 .

It is not a de Polignac number, because 25245437 - 2⁶ = 25245373 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 (25245431) 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, 2264 + ... + 7457.

It is an arithmetic number, because the mean of its divisors is an integer number (2493693).

Almost surely, 2^25245437 is an apocalyptic number.

It is an amenable number.

25245437 is a deficient number, since it is larger than the sum of its proper divisors (4678879).

25245437 is an equidigital number, since it uses as much as digits as its factorization.

25245437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9788 (or 9781 counting only the distinct ones).

The product of its digits is 33600, while the sum is 32.

The square root of 25245437 is about 5024.4837545762. The cubic root of 25245437 is about 293.3555422521.

Adding to 25245437 its reverse (73454252), we get a palindrome (98699689).

The spelling of 25245437 in words is "twenty-five million, two hundred forty-five thousand, four hundred thirty-seven".