25245137 has 8 divisors (see below), whose sum is σ = 26001576. Its totient is φ = 24492672.

The previous prime is 25245133. The next prime is 25245139. The reversal of 25245137 is 73154252.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18671041 + 6574096 = 4321^2 + 2564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25245137 - 2² = 25245133 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (25245133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16163 + ... + 17655.

It is an arithmetic number, because the mean of its divisors is an integer number (3250197).

Almost surely, 2^25245137 is an apocalyptic number.

It is an amenable number.

25245137 is a deficient number, since it is larger than the sum of its proper divisors (756439).

25245137 is a wasteful number, since it uses less digits than its factorization.

25245137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987.

The product of its digits is 8400, while the sum is 29.

The square root of 25245137 is about 5024.4539006742. The cubic root of 25245137 is about 293.3543802334.

Adding to 25245137 its reverse (73154252), we get a palindrome (98399389).

The spelling of 25245137 in words is "twenty-five million, two hundred forty-five thousand, one hundred thirty-seven".