25155041381 has 2 divisors, whose sum is σ = 25155041382. Its totient is φ = 25155041380.

The previous prime is 25155041269. The next prime is 25155041407. The reversal of 25155041381 is 18314055152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20230510756 + 4924530625 = 142234^2 + 70175^2 .

It is a cyclic number.

It is not a de Polignac number, because 25155041381 - 2¹⁰ = 25155040357 is a prime.

It is a super-2 number, since 2×25155041381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25155041081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12577520690 + 12577520691.

It is an arithmetic number, because the mean of its divisors is an integer number (12577520691).

Almost surely, 2^25155041381 is an apocalyptic number.

It is an amenable number.

25155041381 is a deficient number, since it is larger than the sum of its proper divisors (1).

25155041381 is an equidigital number, since it uses as much as digits as its factorization.

25155041381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 35.

The spelling of 25155041381 in words is "twenty-five billion, one hundred fifty-five million, forty-one thousand, three hundred eighty-one".