20425335241040 has 20 divisors (see below), whose sum is σ = 47488904435604. Its totient is φ = 8170134096384.

The previous prime is 20425335240979. The next prime is 20425335241061. The reversal of 20425335241040 is 4014253352402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10087026816064 + 10338308424976 = 3176008^2 + 3215324^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127658345177 + ... + 127658345336.

Almost surely, 2^{20425335241040} is an apocalyptic number.

20425335241040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20425335241040 is an abundant number, since it is smaller than the sum of its proper divisors (27063569194564).

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

20425335241040 is a wasteful number, since it uses less digits than its factorization.

20425335241040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255316690526 (or 255316690520 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 20425335241040 its reverse (4014253352402), we get a palindrome (24439588593442).

The spelling of 20425335241040 in words is "twenty trillion, four hundred twenty-five billion, three hundred thirty-five million, two hundred forty-one thousand, forty".