25801520162000 has 160 divisors (see below), whose sum is σ = 70255195665408. Its totient is φ = 9079713600000.

The previous prime is 25801520161993. The next prime is 25801520162027. The reversal of 25801520162000 is 26102510852.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 18234071 + ... + 19598070.

Almost surely, 2^{25801520162000} is an apocalyptic number.

25801520162000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25801520162000 is an abundant number, since it is smaller than the sum of its proper divisors (44453675503408).

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

25801520162000 is a wasteful number, since it uses less digits than its factorization.

25801520162000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37832206 (or 37832190 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 25801520162000 its reverse (26102510852), we get a palindrome (25827622672852).

The spelling of 25801520162000 in words is "twenty-five trillion, eight hundred one billion, five hundred twenty million, one hundred sixty-two thousand".