20131201125 has 96 divisors (see below), whose sum is σ = 41631562752. Its totient is φ = 9167904000.

The previous prime is 20131201091. The next prime is 20131201159. The reversal of 20131201125 is 52110213102.

It is an interprime number because it is at equal distance from previous prime (20131201091) and next prime (20131201159).

It is not a de Polignac number, because 20131201125 - 2⁶ = 20131201061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20131201098 and 20131201107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2129409 + ... + 2138841.

It is an arithmetic number, because the mean of its divisors is an integer number (433662112).

Almost surely, 2^20131201125 is an apocalyptic number.

20131201125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20131201125 is an abundant number, since it is smaller than the sum of its proper divisors (21500361627).

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

20131201125 is a wasteful number, since it uses less digits than its factorization.

20131201125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9732 (or 9719 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 20131201125 its reverse (52110213102), we get a palindrome (72241414227).

The spelling of 20131201125 in words is "twenty billion, one hundred thirty-one million, two hundred one thousand, one hundred twenty-five".