25489448156 has 6 divisors (see below), whose sum is σ = 44606534280. Its totient is φ = 12744724076.

The previous prime is 25489448147. The next prime is 25489448167. The reversal of 25489448156 is 65184498452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3186181016 + ... + 3186181023.

It is an arithmetic number, because the mean of its divisors is an integer number (7434422380).

Almost surely, 2^25489448156 is an apocalyptic number.

It is an amenable number.

25489448156 is a deficient number, since it is larger than the sum of its proper divisors (19117086124).

25489448156 is a wasteful number, since it uses less digits than its factorization.

25489448156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6372362043 (or 6372362041 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 56.

The spelling of 25489448156 in words is "twenty-five billion, four hundred eighty-nine million, four hundred forty-eight thousand, one hundred fifty-six".