25953697 has 16 divisors (see below), whose sum is σ = 33151104. Its totient is φ = 19728000.

The previous prime is 25953689. The next prime is 25953701. The reversal of 25953697 is 79635952.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25953697 - 2³ = 25953689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25953197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 954 + ... + 7267.

It is an arithmetic number, because the mean of its divisors is an integer number (2071944).

Almost surely, 2^25953697 is an apocalyptic number.

It is an amenable number.

25953697 is a deficient number, since it is larger than the sum of its proper divisors (7197407).

25953697 is a wasteful number, since it uses less digits than its factorization.

25953697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280.

The product of its digits is 510300, while the sum is 46.

The square root of 25953697 is about 5094.4771076137. The cubic root of 25953697 is about 296.0736402182.

It can be divided in two parts, 259 and 53697, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 25953697 in words is "twenty-five million, nine hundred fifty-three thousand, six hundred ninety-seven".