25331401189 has 2 divisors, whose sum is σ = 25331401190. Its totient is φ = 25331401188.

The previous prime is 25331401181. The next prime is 25331401231. The reversal of 25331401189 is 98110413352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24097284289 + 1234116900 = 155233^2 + 35130^2 .

It is a cyclic number.

It is not a de Polignac number, because 25331401189 - 2³ = 25331401181 is a prime.

It is a super-2 number, since 2×25331401189² (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 (25331401181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12665700594 + 12665700595.

It is an arithmetic number, because the mean of its divisors is an integer number (12665700595).

Almost surely, 2^25331401189 is an apocalyptic number.

It is an amenable number.

25331401189 is a deficient number, since it is larger than the sum of its proper divisors (1).

25331401189 is an equidigital number, since it uses as much as digits as its factorization.

25331401189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 25331401189 in words is "twenty-five billion, three hundred thirty-one million, four hundred one thousand, one hundred eighty-nine".