25279117 has 8 divisors (see below), whose sum is σ = 25615800. Its totient is φ = 24944640.

The previous prime is 25279087. The next prime is 25279123. The reversal of 25279117 is 71197252.

It can be written as a sum of positive squares in 4 ways, for example, as 4247721 + 21031396 = 2061^2 + 4586^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25279117 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 (25279127) 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, 39117 + ... + 39757.

It is an arithmetic number, because the mean of its divisors is an integer number (3201975).

Almost surely, 2^25279117 is an apocalyptic number.

It is an amenable number.

25279117 is a deficient number, since it is larger than the sum of its proper divisors (336683).

25279117 is a wasteful number, since it uses less digits than its factorization.

25279117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103.

The product of its digits is 8820, while the sum is 34.

The square root of 25279117 is about 5027.8342255886. The cubic root of 25279117 is about 293.4859397332.

The spelling of 25279117 in words is "twenty-five million, two hundred seventy-nine thousand, one hundred seventeen".