25345250440524 has 144 divisors (see below), whose sum is σ = 73353169344000. Its totient is φ = 7228295013888.

The previous prime is 25345250440513. The next prime is 25345250440577. The reversal of 25345250440524 is 42504405254352.

25345250440524 is a `hidden beast` number, since 2 + 5 + 3 + 4 + 52 + 504 + 40 + 52 + 4 = 666.

It is a super-2 number, since 2×25345250440524² (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 25345250440524.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1948279332 + ... + 1948292340.

Almost surely, 2^{25345250440524} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25345250440524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36676584672000).

25345250440524 is an abundant number, since it is smaller than the sum of its proper divisors (48007918903476).

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

25345250440524 is a wasteful number, since it uses less digits than its factorization.

25345250440524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26532 (or 26527 counting only the distinct ones).

The product of its (nonzero) digits is 3840000, while the sum is 45.

Adding to 25345250440524 its reverse (42504405254352), we get a palindrome (67849655694876).

The spelling of 25345250440524 in words is "twenty-five trillion, three hundred forty-five billion, two hundred fifty million, four hundred forty thousand, five hundred twenty-four".