25722537 has 4 divisors (see below), whose sum is σ = 34296720. Its totient is φ = 17148356.

The previous prime is 25722517. The next prime is 25722551. The reversal of 25722537 is 73522752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25722537 - 2¹⁰ = 25721513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25722498 and 25722507.

It is not an unprimeable number, because it can be changed into a prime (25722517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4287087 + ... + 4287092.

It is an arithmetic number, because the mean of its divisors is an integer number (8574180).

Almost surely, 2^25722537 is an apocalyptic number.

It is an amenable number.

25722537 is a deficient number, since it is larger than the sum of its proper divisors (8574183).

25722537 is an equidigital number, since it uses as much as digits as its factorization.

25722537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8574182.

The product of its digits is 29400, while the sum is 33.

The square root of 25722537 is about 5071.7390508582. The cubic root of 25722537 is about 295.1920113547.

The spelling of 25722537 in words is "twenty-five million, seven hundred twenty-two thousand, five hundred thirty-seven".