25422031 has 4 divisors (see below), whose sum is σ = 25770352. Its totient is φ = 25073712.

The previous prime is 25422029. The next prime is 25422041. The reversal of 25422031 is 13022452.

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 25422031 - 2¹ = 25422029 is a prime.

It is a super-2 number, since 2×25422031² = 1292559320329922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25422041) 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, 174051 + ... + 174196.

It is an arithmetic number, because the mean of its divisors is an integer number (6442588).

Almost surely, 2^25422031 is an apocalyptic number.

25422031 is a deficient number, since it is larger than the sum of its proper divisors (348321).

25422031 is an equidigital number, since it uses as much as digits as its factorization.

25422031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348320.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 25422031 is about 5042.0264775187. The cubic root of 25422031 is about 294.0379692427.

Adding to 25422031 its reverse (13022452), we get a palindrome (38444483).

The spelling of 25422031 in words is "twenty-five million, four hundred twenty-two thousand, thirty-one".