25150361557 has 2 divisors, whose sum is σ = 25150361558. Its totient is φ = 25150361556.

The previous prime is 25150361543. The next prime is 25150361669. The reversal of 25150361557 is 75516305152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19139615716 + 6010745841 = 138346^2 + 77529^2 .

It is a cyclic number.

It is not a de Polignac number, because 25150361557 - 2¹⁹ = 25149837269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25150368557) 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, 12575180778 + 12575180779.

It is an arithmetic number, because the mean of its divisors is an integer number (12575180779).

Almost surely, 2^25150361557 is an apocalyptic number.

It is an amenable number.

25150361557 is a deficient number, since it is larger than the sum of its proper divisors (1).

25150361557 is an equidigital number, since it uses as much as digits as its factorization.

25150361557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157500, while the sum is 40.

The spelling of 25150361557 in words is "twenty-five billion, one hundred fifty million, three hundred sixty-one thousand, five hundred fifty-seven".