2515254421 has 2 divisors, whose sum is σ = 2515254422. Its totient is φ = 2515254420.

The previous prime is 2515254383. The next prime is 2515254463. The reversal of 2515254421 is 1244525152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1458094225 + 1057160196 = 38185^2 + 32514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2515254421 - 2¹¹ = 2515252373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2515254481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257627210 + 1257627211.

It is an arithmetic number, because the mean of its divisors is an integer number (1257627211).

Almost surely, 2^2515254421 is an apocalyptic number.

It is an amenable number.

2515254421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2515254421 is an equidigital number, since it uses as much as digits as its factorization.

2515254421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16000, while the sum is 31.

The square root of 2515254421 is about 50152.3122198768. The cubic root of 2515254421 is about 1359.9636706342.

Adding to 2515254421 its reverse (1244525152), we get a palindrome (3759779573).

The spelling of 2515254421 in words is "two billion, five hundred fifteen million, two hundred fifty-four thousand, four hundred twenty-one".