25321552021213 has 16 divisors (see below), whose sum is σ = 29058529878144. Its totient is φ = 21614565934080.

The previous prime is 25321552021189. The next prime is 25321552021289. The reversal of 25321552021213 is 31212025512352.

It is a de Polignac number, because none of the positive numbers 2^k-25321552021213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25321552025213) 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, 248020 + ... + 7120717.

It is an arithmetic number, because the mean of its divisors is an integer number (1816158117384).

Almost surely, 2^{25321552021213} is an apocalyptic number.

It is an amenable number.

25321552021213 is a deficient number, since it is larger than the sum of its proper divisors (3736977856931).

25321552021213 is a wasteful number, since it uses less digits than its factorization.

25321552021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7370772.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 25321552021213 its reverse (31212025512352), we get a palindrome (56533577533565).

The spelling of 25321552021213 in words is "twenty-five trillion, three hundred twenty-one billion, five hundred fifty-two million, twenty-one thousand, two hundred thirteen".