25581481962 has 8 divisors (see below), whose sum is σ = 51162963936. Its totient is φ = 8527160652.

The previous prime is 25581481957. The next prime is 25581481979. The reversal of 25581481962 is 26918418552.

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

25581481962 is an admirable 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, 2131790158 + ... + 2131790169.

It is an arithmetic number, because the mean of its divisors is an integer number (6395370492).

Almost surely, 2^25581481962 is an apocalyptic number.

25581481962 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.

25581481962 is a wasteful number, since it uses less digits than its factorization.

25581481962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263580332.

The product of its digits is 1382400, while the sum is 51.

The spelling of 25581481962 in words is "twenty-five billion, five hundred eighty-one million, four hundred eighty-one thousand, nine hundred sixty-two".