25001022 has 8 divisors (see below), whose sum is σ = 50002056. Its totient is φ = 8333672.

The previous prime is 25000991. The next prime is 25001029. The reversal of 25001022 is 22010052.

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

25001022 is an admirable number.

It is a super-2 number, since 2×25001022² = 1250102202088968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25000989 and 25001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25001029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2083413 + ... + 2083424.

It is an arithmetic number, because the mean of its divisors is an integer number (6250257).

Almost surely, 2^25001022 is an apocalyptic number.

25001022 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.

25001022 is a wasteful number, since it uses less digits than its factorization.

25001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166842.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 25001022 is about 5000.1021989555. The cubic root of 25001022 is about 292.4057582285.

Adding to 25001022 its reverse (22010052), we get a palindrome (47011074).

The spelling of 25001022 in words is "twenty-five million, one thousand, twenty-two".