25421622 has 8 divisors (see below), whose sum is σ = 50843256. Its totient is φ = 8473872.

The previous prime is 25421611. The next prime is 25421629. The reversal of 25421622 is 22612452.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

25421622 is an admirable number.

It is a super-2 number, since 2×25421622² = 1292517730221768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25421592 and 25421601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25421629) 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, 2118463 + ... + 2118474.

It is an arithmetic number, because the mean of its divisors is an integer number (6355407).

Almost surely, 2^25421622 is an apocalyptic number.

25421622 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25421622 is a wasteful number, since it uses less digits than its factorization.

25421622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236942.

The product of its digits is 1920, while the sum is 24.

The square root of 25421622 is about 5041.9859182667. The cubic root of 25421622 is about 294.0363923667.

The spelling of 25421622 in words is "twenty-five million, four hundred twenty-one thousand, six hundred twenty-two".