25253554544 has 10 divisors (see below), whose sum is σ = 48928761960. Its totient is φ = 12626777264.

The previous prime is 25253554541. The next prime is 25253554567. The reversal of 25253554544 is 44545535252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25253554495 and 25253554504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25253554541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 789173564 + ... + 789173595.

It is an arithmetic number, because the mean of its divisors is an integer number (4892876196).

Almost surely, 2^25253554544 is an apocalyptic number.

It is an amenable number.

25253554544 is a deficient number, since it is larger than the sum of its proper divisors (23675207416).

25253554544 is a wasteful number, since it uses less digits than its factorization.

25253554544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578347167 (or 1578347161 counting only the distinct ones).

The product of its digits is 2400000, while the sum is 44.

The spelling of 25253554544 in words is "twenty-five billion, two hundred fifty-three million, five hundred fifty-four thousand, five hundred forty-four".