20402131041225 has 144 divisors (see below), whose sum is σ = 37522306418688. Its totient is φ = 10590672000000.

The previous prime is 20402131041211. The next prime is 20402131041241. The reversal of 20402131041225 is 52214013120402.

20402131041225 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 213 + 10 + 412 + 25 = 666.

It is not a de Polignac number, because 20402131041225 - 2¹⁰ = 20402131040201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11265670570 + ... + 11265672380.

It is an arithmetic number, because the mean of its divisors is an integer number (260571572352).

Almost surely, 2^{20402131041225} is an apocalyptic number.

20402131041225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20402131041225 is a deficient number, since it is larger than the sum of its proper divisors (17120175377463).

20402131041225 is a wasteful number, since it uses less digits than its factorization.

20402131041225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080 (or 4072 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 20402131041225 its reverse (52214013120402), we get a palindrome (72616144161627).

The spelling of 20402131041225 in words is "twenty trillion, four hundred two billion, one hundred thirty-one million, forty-one thousand, two hundred twenty-five".