25745697 has 6 divisors (see below), whose sum is σ = 37188242. Its totient is φ = 17163792.

The previous prime is 25745689. The next prime is 25745711. The reversal of 25745697 is 79654752.

It can be written as a sum of positive squares in only one way, i.e., 18584721 + 7160976 = 4311^2 + 2676^2 .

It is not a de Polignac number, because 25745697 - 2³ = 25745689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25741697) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1430308 + ... + 1430325.

Almost surely, 2^25745697 is an apocalyptic number.

It is an amenable number.

25745697 is a deficient number, since it is larger than the sum of its proper divisors (11442545).

25745697 is a wasteful number, since it uses less digits than its factorization.

25745697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860639 (or 2860636 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 25745697 is about 5074.0217776435. The cubic root of 25745697 is about 295.2805795514.

It can be divided in two parts, 257 and 45697, that added together give a palindrome (45954).

The spelling of 25745697 in words is "twenty-five million, seven hundred forty-five thousand, six hundred ninety-seven".