25153456242 has 64 divisors (see below), whose sum is σ = 54007326720. Its totient is φ = 7785595584.

The previous prime is 25153456231. The next prime is 25153456247. The reversal of 25153456242 is 24265435152.

It is a self number, because there is not a number n which added to its sum of digits gives 25153456242.

It is not an unprimeable number, because it can be changed into a prime (25153456247) 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 in 31 ways as a sum of consecutive naturals, for example, 10554183 + ... + 10556565.

It is an arithmetic number, because the mean of its divisors is an integer number (843864480).

Almost surely, 2^25153456242 is an apocalyptic number.

25153456242 is an abundant number, since it is smaller than the sum of its proper divisors (28853870478).

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

25153456242 is a wasteful number, since it uses less digits than its factorization.

25153456242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4207.

The product of its digits is 288000, while the sum is 39.

The spelling of 25153456242 in words is "twenty-five billion, one hundred fifty-three million, four hundred fifty-six thousand, two hundred forty-two".