25622251 has 4 divisors (see below), whose sum is σ = 25659504. Its totient is φ = 25585000.

The previous prime is 25622231. The next prime is 25622273. The reversal of 25622251 is 15222652.

It is a happy number.

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 25622251 - 2¹³ = 25614059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25622231) 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, 17575 + ... + 18976.

It is an arithmetic number, because the mean of its divisors is an integer number (6414876).

Almost surely, 2^25622251 is an apocalyptic number.

25622251 is a deficient number, since it is larger than the sum of its proper divisors (37253).

25622251 is an equidigital number, since it uses as much as digits as its factorization.

25622251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37252.

The product of its digits is 2400, while the sum is 25.

The square root of 25622251 is about 5061.8426486804. The cubic root of 25622251 is about 294.8078841063.

The spelling of 25622251 in words is "twenty-five million, six hundred twenty-two thousand, two hundred fifty-one".