25969957 has 8 divisors (see below), whose sum is σ = 28427000. Its totient is φ = 23578560.

The previous prime is 25969949. The next prime is 25969981. The reversal of 25969957 is 75996952.

It can be written as a sum of positive squares in 4 ways, for example, as 1378276 + 24591681 = 1174^2 + 4959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25969957 - 2³ = 25969949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25969927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15582 + ... + 17167.

It is an arithmetic number, because the mean of its divisors is an integer number (3553375).

Almost surely, 2^25969957 is an apocalyptic number.

It is an amenable number.

25969957 is a deficient number, since it is larger than the sum of its proper divisors (2457043).

25969957 is a wasteful number, since it uses less digits than its factorization.

25969957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32823.

The product of its digits is 1530900, while the sum is 52.

The square root of 25969957 is about 5096.0727035630. The cubic root of 25969957 is about 296.1354573893.

The spelling of 25969957 in words is "twenty-five million, nine hundred sixty-nine thousand, nine hundred fifty-seven".