20255413 has 2 divisors, whose sum is σ = 20255414. Its totient is φ = 20255412.

The previous prime is 20255399. The next prime is 20255423. The reversal of 20255413 is 31455202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20232004 + 23409 = 4498^2 + 153^2 .

It is a cyclic number.

It is not a de Polignac number, because 20255413 - 2⁹ = 20254901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20255423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10127706 + 10127707.

It is an arithmetic number, because the mean of its divisors is an integer number (10127707).

Almost surely, 2^20255413 is an apocalyptic number.

It is an amenable number.

20255413 is a deficient number, since it is larger than the sum of its proper divisors (1).

20255413 is an equidigital number, since it uses as much as digits as its factorization.

20255413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 20255413 is about 4500.6014042570. The cubic root of 20255413 is about 272.5923733630.

The spelling of 20255413 in words is "twenty million, two hundred fifty-five thousand, four hundred thirteen".