25315769 has 2 divisors, whose sum is σ = 25315770. Its totient is φ = 25315768.

The previous prime is 25315757. The next prime is 25315781. The reversal of 25315769 is 96751352.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (25315757) and next prime (25315781).

It can be written as a sum of positive squares in only one way, i.e., 14160169 + 11155600 = 3763^2 + 3340^2 .

It is a cyclic number.

It is not a de Polignac number, because 25315769 - 2⁸ = 25315513 is a prime.

It is a super-2 number, since 2×25315769² = 1281776320122722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25305769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12657884 + 12657885.

It is an arithmetic number, because the mean of its divisors is an integer number (12657885).

Almost surely, 2^25315769 is an apocalyptic number.

It is an amenable number.

25315769 is a deficient number, since it is larger than the sum of its proper divisors (1).

25315769 is an equidigital number, since it uses as much as digits as its factorization.

25315769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 38.

The square root of 25315769 is about 5031.4778147181. The cubic root of 25315769 is about 293.6277122496.

The spelling of 25315769 in words is "twenty-five million, three hundred fifteen thousand, seven hundred sixty-nine".