25401250212001 has 2 divisors, whose sum is σ = 25401250212002. Its totient is φ = 25401250212000.

The previous prime is 25401250211989. The next prime is 25401250212071. The reversal of 25401250212001 is 10021205210452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25343159571601 + 58090640400 = 5034199^2 + 241020^2 .

It is a cyclic number.

It is not a de Polignac number, because 25401250212001 - 2⁴³ = 16605157189793 is a prime.

It is not a weakly prime, because it can be changed into another prime (25401250212071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12700625106000 + 12700625106001.

It is an arithmetic number, because the mean of its divisors is an integer number (12700625106001).

Almost surely, 2^{25401250212001} is an apocalyptic number.

It is an amenable number.

25401250212001 is a deficient number, since it is larger than the sum of its proper divisors (1).

25401250212001 is an equidigital number, since it uses as much as digits as its factorization.

25401250212001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 25401250212001 its reverse (10021205210452), we get a palindrome (35422455422453).

The spelling of 25401250212001 in words is "twenty-five trillion, four hundred one billion, two hundred fifty million, two hundred twelve thousand, one".