25130220502021 has 2 divisors, whose sum is σ = 25130220502022. Its totient is φ = 25130220502020.

The previous prime is 25130220502003. The next prime is 25130220502039. The reversal of 25130220502021 is 12020502203152.

It is a balanced prime because it is at equal distance from previous prime (25130220502003) and next prime (25130220502039).

It can be written as a sum of positive squares in only one way, i.e., 13747491633121 + 11382728868900 = 3707761^2 + 3373830^2 .

It is a cyclic number.

It is not a de Polignac number, because 25130220502021 - 2²¹ = 25130218404869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25130220302021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12565110251010 + 12565110251011.

It is an arithmetic number, because the mean of its divisors is an integer number (12565110251011).

Almost surely, 2^{25130220502021} is an apocalyptic number.

It is an amenable number.

25130220502021 is a deficient number, since it is larger than the sum of its proper divisors (1).

25130220502021 is an equidigital number, since it uses as much as digits as its factorization.

25130220502021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 25130220502021 its reverse (12020502203152), we get a palindrome (37150722705173).

The spelling of 25130220502021 in words is "twenty-five trillion, one hundred thirty billion, two hundred twenty million, five hundred two thousand, twenty-one".