25450211212004 has 12 divisors (see below), whose sum is σ = 44538107266800. Its totient is φ = 12725037707208.

The previous prime is 25450211211967. The next prime is 25450211212009. The reversal of 25450211212004 is 40021211205452.

It is a super-2 number, since 2×25450211212004² (a number of 28 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 16126634 + ... + 17634305.

It is an arithmetic number, because the mean of its divisors is an integer number (3711508938900).

Almost surely, 2^{25450211212004} is an apocalyptic number.

It is an amenable number.

25450211212004 is a deficient number, since it is larger than the sum of its proper divisors (19087896054796).

25450211212004 is a wasteful number, since it uses less digits than its factorization.

25450211212004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33949402 (or 33949400 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 25450211212004 its reverse (40021211205452), we get a palindrome (65471422417456).

The spelling of 25450211212004 in words is "twenty-five trillion, four hundred fifty billion, two hundred eleven million, two hundred twelve thousand, four".