25072917 has 8 divisors (see below), whose sum is σ = 33570240. Its totient is φ = 16645440.

The previous prime is 25072903. The next prime is 25072933. The reversal of 25072917 is 71927052.

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

It is not a de Polignac number, because 25072917 - 2⁸ = 25072661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25072937) 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, 16617 + ... + 18062.

It is an arithmetic number, because the mean of its divisors is an integer number (4196280).

Almost surely, 2^25072917 is an apocalyptic number.

It is an amenable number.

25072917 is a deficient number, since it is larger than the sum of its proper divisors (8497323).

25072917 is a wasteful number, since it uses less digits than its factorization.

25072917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34923.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 25072917 is about 5007.2863908508. The cubic root of 25072917 is about 292.6857786848.

Adding to 25072917 its reverse (71927052), we get a palindrome (96999969).

The spelling of 25072917 in words is "twenty-five million, seventy-two thousand, nine hundred seventeen".