25005211212001 has 8 divisors (see below), whose sum is σ = 25048056509280. Its totient is φ = 24962366755968.

The previous prime is 25005211211983. The next prime is 25005211212097. The reversal of 25005211212001 is 10021211250052.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25005211212001 - 2⁹ = 25005211211489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25005211222001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100351770 + ... + 100600636.

It is an arithmetic number, because the mean of its divisors is an integer number (3131007063660).

Almost surely, 2^{25005211212001} is an apocalyptic number.

It is an amenable number.

25005211212001 is a deficient number, since it is larger than the sum of its proper divisors (42845297279).

25005211212001 is a wasteful number, since it uses less digits than its factorization.

25005211212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420623.

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 25005211212001 its reverse (10021211250052), we get a palindrome (35026422462053).

The spelling of 25005211212001 in words is "twenty-five trillion, five billion, two hundred eleven million, two hundred twelve thousand, one".