15255435641 has 2 divisors, whose sum is σ = 15255435642. Its totient is φ = 15255435640.

The previous prime is 15255435619. The next prime is 15255435647. The reversal of 15255435641 is 14653455251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11407094416 + 3848341225 = 106804^2 + 62035^2 .

It is a cyclic number.

It is not a de Polignac number, because 15255435641 - 2⁶ = 15255435577 is a prime.

It is not a weakly prime, because it can be changed into another prime (15255435647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7627717820 + 7627717821.

It is an arithmetic number, because the mean of its divisors is an integer number (7627717821).

Almost surely, 2^15255435641 is an apocalyptic number.

It is an amenable number.

15255435641 is a deficient number, since it is larger than the sum of its proper divisors (1).

15255435641 is an equidigital number, since it uses as much as digits as its factorization.

15255435641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360000, while the sum is 41.

The spelling of 15255435641 in words is "fifteen billion, two hundred fifty-five million, four hundred thirty-five thousand, six hundred forty-one".