25510552422 has 8 divisors (see below), whose sum is σ = 51021104856. Its totient is φ = 8503517472.

The previous prime is 25510552349. The next prime is 25510552439. The reversal of 25510552422 is 22425501552.

It is a happy number.

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

25510552422 is an admirable number.

It is a super-2 number, since 2×25510552422² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2125879363 + ... + 2125879374.

It is an arithmetic number, because the mean of its divisors is an integer number (6377638107).

Almost surely, 2^25510552422 is an apocalyptic number.

25510552422 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.

25510552422 is a wasteful number, since it uses less digits than its factorization.

25510552422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4251758742.

The product of its (nonzero) digits is 40000, while the sum is 33.

The spelling of 25510552422 in words is "twenty-five billion, five hundred ten million, five hundred fifty-two thousand, four hundred twenty-two".