20120401325 has 12 divisors (see below), whose sum is σ = 25229629620. Its totient is φ = 15915461760.

The previous prime is 20120401321. The next prime is 20120401331. The reversal of 20120401325 is 52310402102.

It can be written as a sum of positive squares in 6 ways, for example, as 2654928676 + 17465472649 = 51526^2 + 132157^2 .

It is not a de Polignac number, because 20120401325 - 2² = 20120401321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20120401297 and 20120401306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120401321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4519214 + ... + 4523663.

It is an arithmetic number, because the mean of its divisors is an integer number (2102469135).

Almost surely, 2^20120401325 is an apocalyptic number.

20120401325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20120401325 is a deficient number, since it is larger than the sum of its proper divisors (5109228295).

20120401325 is an equidigital number, since it uses as much as digits as its factorization.

20120401325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9042976 (or 9042971 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 20120401325 its reverse (52310402102), we get a palindrome (72430803427).

The spelling of 20120401325 in words is "twenty billion, one hundred twenty million, four hundred one thousand, three hundred twenty-five".