25151285 has 4 divisors (see below), whose sum is σ = 30181548. Its totient is φ = 20121024.

The previous prime is 25151281. The next prime is 25151297. The reversal of 25151285 is 58215152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3407716 + 21743569 = 1846^2 + 4663^2 .

It is a cyclic number.

It is not a de Polignac number, because 25151285 - 2² = 25151281 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 (25151281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2515124 + ... + 2515133.

It is an arithmetic number, because the mean of its divisors is an integer number (7545387).

Almost surely, 2^25151285 is an apocalyptic number.

It is an amenable number.

25151285 is a deficient number, since it is larger than the sum of its proper divisors (5030263).

25151285 is an equidigital number, since it uses as much as digits as its factorization.

25151285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030262.

The product of its digits is 4000, while the sum is 29.

The square root of 25151285 is about 5015.1056818376. The cubic root of 25151285 is about 292.9904014375.

The spelling of 25151285 in words is "twenty-five million, one hundred fifty-one thousand, two hundred eighty-five".