25422251 has 4 divisors (see below), whose sum is σ = 25464072. Its totient is φ = 25380432.

The previous prime is 25422233. The next prime is 25422283. The reversal of 25422251 is 15222452.

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

It is a cyclic number.

It is not a de Polignac number, because 25422251 - 2¹⁴ = 25405867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25422851) 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, 19985 + ... + 21218.

It is an arithmetic number, because the mean of its divisors is an integer number (6366018).

Almost surely, 2^25422251 is an apocalyptic number.

25422251 is a deficient number, since it is larger than the sum of its proper divisors (41821).

25422251 is an equidigital number, since it uses as much as digits as its factorization.

25422251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41820.

The product of its digits is 1600, while the sum is 23.

The square root of 25422251 is about 5042.0482940964. The cubic root of 25422251 is about 294.0388174331.

The spelling of 25422251 in words is "twenty-five million, four hundred twenty-two thousand, two hundred fifty-one".