25545405240000 has 1120 divisors, whose sum is σ = 96392624486400. Its totient is φ = 6629575680000.

The previous prime is 25545405239933. The next prime is 25545405240037. The reversal of 25545405240000 is 4250454552.

25545405240000 is a `hidden beast` number, since 2 + 5 + 5 + 4 + 5 + 405 + 240 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 6057717892 + ... + 6057722108.

Almost surely, 2^{25545405240000} is an apocalyptic number.

25545405240000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25545405240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48196312243200).

25545405240000 is an abundant number, since it is smaller than the sum of its proper divisors (70847219246400).

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

25545405240000 is an equidigital number, since it uses as much as digits as its factorization.

25545405240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408 (or 4377 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 36.

Adding to 25545405240000 its reverse (4250454552), we get a palindrome (25549655694552).

The spelling of 25545405240000 in words is "twenty-five trillion, five hundred forty-five billion, four hundred five million, two hundred forty thousand".