25505004333240 has 128 divisors (see below), whose sum is σ = 88713058636800. Its totient is φ = 6505624287360.

The previous prime is 25505004333203. The next prime is 25505004333269. The reversal of 25505004333240 is 4233340050552.

25505004333240 is a `hidden beast` number, since 2 + 5 + 50 + 500 + 4 + 33 + 32 + 40 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 25505004333195 and 25505004333204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 513360916 + ... + 513410595.

It is an arithmetic number, because the mean of its divisors is an integer number (693070770600).

Almost surely, 2^{25505004333240} is an apocalyptic number.

25505004333240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25505004333240 is an abundant number, since it is smaller than the sum of its proper divisors (63208054303560).

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

25505004333240 is a wasteful number, since it uses less digits than its factorization.

25505004333240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026771554 (or 1026771544 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 36.

Adding to 25505004333240 its reverse (4233340050552), we get a palindrome (29738344383792).

The spelling of 25505004333240 in words is "twenty-five trillion, five hundred five billion, four million, three hundred thirty-three thousand, two hundred forty".