25138458486 has 64 divisors (see below), whose sum is σ = 56362844160. Its totient is φ = 8304690240.

The previous prime is 25138458451. The next prime is 25138458487. The reversal of 25138458486 is 68485483152.

25138458486 is a `hidden beast` number, since 2 + 51 + 3 + 8 + 4 + 584 + 8 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25138458487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11019666 + ... + 11021946.

It is an arithmetic number, because the mean of its divisors is an integer number (880669440).

Almost surely, 2^25138458486 is an apocalyptic number.

25138458486 is an abundant number, since it is smaller than the sum of its proper divisors (31224385674).

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

25138458486 is a wasteful number, since it uses less digits than its factorization.

25138458486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4026 (or 4020 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

The spelling of 25138458486 in words is "twenty-five billion, one hundred thirty-eight million, four hundred fifty-eight thousand, four hundred eighty-six".