25134454381563 has 12 divisors (see below), whose sum is σ = 36566512371480. Its totient is φ = 16635753978336.

The previous prime is 25134454381559. The next prime is 25134454381573. The reversal of 25134454381563 is 36518345443152.

25134454381563 is a `hidden beast` number, since 2 + 5 + 1 + 3 + 4 + 45 + 4 + 38 + 1 + 563 = 666.

It is not a de Polignac number, because 25134454381563 - 2² = 25134454381559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25134454381573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10045743906 + ... + 10045746407.

It is an arithmetic number, because the mean of its divisors is an integer number (3047209364290).

Almost surely, 2^{25134454381563} is an apocalyptic number.

25134454381563 is a deficient number, since it is larger than the sum of its proper divisors (11432057989917).

25134454381563 is a wasteful number, since it uses less digits than its factorization.

25134454381563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20091490458 (or 20091490455 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 54.

The spelling of 25134454381563 in words is "twenty-five trillion, one hundred thirty-four billion, four hundred fifty-four million, three hundred eighty-one thousand, five hundred sixty-three".