25242578953945 has 8 divisors (see below), whose sum is σ = 30291346623744. Its totient is φ = 20193895243824.

The previous prime is 25242578953939. The next prime is 25242578954003. The reversal of 25242578953945 is 54935987524252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25242578953945 is a prime.

It is a super-2 number, since 2×25242578953945² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20326579 + ... + 21532648.

It is an arithmetic number, because the mean of its divisors is an integer number (3786418327968).

Almost surely, 2^{25242578953945} is an apocalyptic number.

It is an amenable number.

25242578953945 is a deficient number, since it is larger than the sum of its proper divisors (5048767669799).

25242578953945 is a wasteful number, since it uses less digits than its factorization.

25242578953945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41979839.

The product of its digits is 1088640000, while the sum is 70.

The spelling of 25242578953945 in words is "twenty-five trillion, two hundred forty-two billion, five hundred seventy-eight million, nine hundred fifty-three thousand, nine hundred forty-five".