25634063444 has 18 divisors (see below), whose sum is σ = 49308499002. Its totient is φ = 11651846800.

The previous prime is 25634063443. The next prime is 25634063449. The reversal of 25634063444 is 44436043652.

It can be written as a sum of positive squares in only one way, i.e., 23519903044 + 2114160400 = 153362^2 + 45980^2 .

It is a super-2 number, since 2×25634063444² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25634063443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26480987 + ... + 26481954.

Almost surely, 2^25634063444 is an apocalyptic number.

It is an amenable number.

25634063444 is a deficient number, since it is larger than the sum of its proper divisors (23674435558).

25634063444 is a wasteful number, since it uses less digits than its factorization.

25634063444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52962967 (or 52962954 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 41.

The spelling of 25634063444 in words is "twenty-five billion, six hundred thirty-four million, sixty-three thousand, four hundred forty-four".