25242313133440 has 64 divisors (see below), whose sum is σ = 64986820612560. Its totient is φ = 9320238692352.

The previous prime is 25242313133399. The next prime is 25242313133449. The reversal of 25242313133440 is 4433131324252.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×25242313133440² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25242313133440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25242313133449) 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 7 ways as a sum of consecutive naturals, for example, 1516957614 + ... + 1516974253.

Almost surely, 2^{25242313133440} is an apocalyptic number.

25242313133440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25242313133440 is an abundant number, since it is smaller than the sum of its proper divisors (39744507479120).

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

25242313133440 is a wasteful number, since it uses less digits than its factorization.

25242313133440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033931899 (or 3033931887 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 37.

Adding to 25242313133440 its reverse (4433131324252), we get a palindrome (29675444457692).

The spelling of 25242313133440 in words is "twenty-five trillion, two hundred forty-two billion, three hundred thirteen million, one hundred thirty-three thousand, four hundred forty".