25450211212001 has 16 divisors (see below), whose sum is σ = 26645534798400. Its totient is φ = 24276081361728.

The previous prime is 25450211211967. The next prime is 25450211212009. The reversal of 25450211212001 is 10021211205452.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25450211212001 is a prime.

It is a super-2 number, since 2×25450211212001² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25450211212009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204621890 + ... + 204746228.

It is an arithmetic number, because the mean of its divisors is an integer number (1665345924900).

Almost surely, 2^{25450211212001} is an apocalyptic number.

It is an amenable number.

25450211212001 is a deficient number, since it is larger than the sum of its proper divisors (1195323586399).

25450211212001 is a wasteful number, since it uses less digits than its factorization.

25450211212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209488.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 25450211212001 its reverse (10021211205452), we get a palindrome (35471422417453).

The spelling of 25450211212001 in words is "twenty-five trillion, four hundred fifty billion, two hundred eleven million, two hundred twelve thousand, one".