25142146369 has 2 divisors, whose sum is σ = 25142146370. Its totient is φ = 25142146368.

The previous prime is 25142146361. The next prime is 25142146493. The reversal of 25142146369 is 96364124152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16481424400 + 8660721969 = 128380^2 + 93063^2 .

It is a cyclic number.

It is not a de Polignac number, because 25142146369 - 2³ = 25142146361 is a prime.

It is a super-2 number, since 2×25142146369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25142146361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12571073184 + 12571073185.

It is an arithmetic number, because the mean of its divisors is an integer number (12571073185).

Almost surely, 2^25142146369 is an apocalyptic number.

It is an amenable number.

25142146369 is a deficient number, since it is larger than the sum of its proper divisors (1).

25142146369 is an equidigital number, since it uses as much as digits as its factorization.

25142146369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 43.

The spelling of 25142146369 in words is "twenty-five billion, one hundred forty-two million, one hundred forty-six thousand, three hundred sixty-nine".