25222464 has 42 divisors (see below), whose sum is σ = 72297290. Its totient is φ = 8407296.

The previous prime is 25222459. The next prime is 25222469. The reversal of 25222464 is 46422252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25222459) and next prime (25222469).

It can be written as a sum of positive squares in only one way, i.e., 24206400 + 1016064 = 4920^2 + 1008^2 .

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25222469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21319 + ... + 22470.

Almost surely, 2^25222464 is an apocalyptic number.

25222464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25222464 is an abundant number, since it is smaller than the sum of its proper divisors (47074826).

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

25222464 is a wasteful number, since it uses less digits than its factorization.

25222464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43807 (or 43794 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 25222464 is about 5022.1971287475. The cubic root of 25222464 is about 293.2665320795.

The spelling of 25222464 in words is "twenty-five million, two hundred twenty-two thousand, four hundred sixty-four".