25221250034513 has 8 divisors (see below), whose sum is σ = 27167765854656. Its totient is φ = 23275651309200.

The previous prime is 25221250034509. The next prime is 25221250034549. The reversal of 25221250034513 is 31543005212252.

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 25221250034513 - 2² = 25221250034509 is a prime.

It is a super-2 number, since 2×25221250034513² (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 (25221250030513) 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, 229216583 + ... + 229326588.

It is an arithmetic number, because the mean of its divisors is an integer number (3395970731832).

Almost surely, 2^{25221250034513} is an apocalyptic number.

It is an amenable number.

25221250034513 is a deficient number, since it is larger than the sum of its proper divisors (1946515820143).

25221250034513 is a wasteful number, since it uses less digits than its factorization.

25221250034513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458547415.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 25221250034513 its reverse (31543005212252), we get a palindrome (56764255246765).

The spelling of 25221250034513 in words is "twenty-five trillion, two hundred twenty-one billion, two hundred fifty million, thirty-four thousand, five hundred thirteen".