25015227704413 has 2 divisors, whose sum is σ = 25015227704414. Its totient is φ = 25015227704412.

The previous prime is 25015227704329. The next prime is 25015227704419. The reversal of 25015227704413 is 31440772251052.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16492874344164 + 8522353360249 = 4061142^2 + 2919307^2 .

It is a cyclic number.

It is not a de Polignac number, because 25015227704413 - 2⁴¹ = 22816204448861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25015227704413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25015227704419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12507613852206 + 12507613852207.

It is an arithmetic number, because the mean of its divisors is an integer number (12507613852207).

Almost surely, 2^{25015227704413} is an apocalyptic number.

It is an amenable number.

25015227704413 is a deficient number, since it is larger than the sum of its proper divisors (1).

25015227704413 is an equidigital number, since it uses as much as digits as its factorization.

25015227704413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 470400, while the sum is 43.

Adding to 25015227704413 its reverse (31440772251052), we get a palindrome (56455999955465).

The spelling of 25015227704413 in words is "twenty-five trillion, fifteen billion, two hundred twenty-seven million, seven hundred four thousand, four hundred thirteen".