25581650153 has 2 divisors, whose sum is σ = 25581650154. Its totient is φ = 25581650152.

The previous prime is 25581650063. The next prime is 25581650177. The reversal of 25581650153 is 35105618552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24063145129 + 1518505024 = 155123^2 + 38968^2 .

It is a cyclic number.

It is not a de Polignac number, because 25581650153 - 2⁸ = 25581649897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25581650153.

It is not a weakly prime, because it can be changed into another prime (25581650053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12790825076 + 12790825077.

It is an arithmetic number, because the mean of its divisors is an integer number (12790825077).

Almost surely, 2^25581650153 is an apocalyptic number.

It is an amenable number.

25581650153 is a deficient number, since it is larger than the sum of its proper divisors (1).

25581650153 is an equidigital number, since it uses as much as digits as its factorization.

25581650153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 25581650153 in words is "twenty-five billion, five hundred eighty-one million, six hundred fifty thousand, one hundred fifty-three".