25285137 has 8 divisors (see below), whose sum is σ = 35696736. Its totient is φ = 15865152.

The previous prime is 25285133. The next prime is 25285163. The reversal of 25285137 is 73158252.

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

It is not a de Polignac number, because 25285137 - 2² = 25285133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25285098 and 25285107.

It is not an unprimeable number, because it can be changed into a prime (25285133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247843 + ... + 247944.

It is an arithmetic number, because the mean of its divisors is an integer number (4462092).

Almost surely, 2^25285137 is an apocalyptic number.

It is an amenable number.

25285137 is a deficient number, since it is larger than the sum of its proper divisors (10411599).

25285137 is a wasteful number, since it uses less digits than its factorization.

25285137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495807.

The product of its digits is 16800, while the sum is 33.

The square root of 25285137 is about 5028.4328572628. The cubic root of 25285137 is about 293.5092349182.

The spelling of 25285137 in words is "twenty-five million, two hundred eighty-five thousand, one hundred thirty-seven".