25852537 has 4 divisors (see below), whose sum is σ = 26119156. Its totient is φ = 25585920.

The previous prime is 25852523. The next prime is 25852549. The reversal of 25852537 is 73525852.

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 20169081 + 5683456 = 4491^2 + 2384^2 .

It is a cyclic number.

It is not a de Polignac number, because 25852537 - 2¹⁵ = 25819769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25852496 and 25852505.

It is not an unprimeable number, because it can be changed into a prime (25852517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133164 + ... + 133357.

It is an arithmetic number, because the mean of its divisors is an integer number (6529789).

Almost surely, 2^25852537 is an apocalyptic number.

It is an amenable number.

25852537 is a deficient number, since it is larger than the sum of its proper divisors (266619).

25852537 is an equidigital number, since it uses as much as digits as its factorization.

25852537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266618.

The product of its digits is 84000, while the sum is 37.

The square root of 25852537 is about 5084.5390154861. The cubic root of 25852537 is about 295.6884695670.

The spelling of 25852537 in words is "twenty-five million, eight hundred fifty-two thousand, five hundred thirty-seven".