25697375 has 24 divisors (see below), whose sum is σ = 35271600. Its totient is φ = 18678000.

The previous prime is 25697369. The next prime is 25697377. The reversal of 25697375 is 57379652.

It is not a de Polignac number, because 25697375 - 2¹⁰ = 25696351 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25697377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14276 + ... + 15974.

It is an arithmetic number, because the mean of its divisors is an integer number (1469650).

Almost surely, 2^25697375 is an apocalyptic number.

25697375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25697375 is a deficient number, since it is larger than the sum of its proper divisors (9574225).

25697375 is a wasteful number, since it uses less digits than its factorization.

25697375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736 (or 1715 counting only the distinct ones).

The product of its digits is 396900, while the sum is 44.

The square root of 25697375 is about 5069.2578352260. The cubic root of 25697375 is about 295.0957268575.

The spelling of 25697375 in words is "twenty-five million, six hundred ninety-seven thousand, three hundred seventy-five".