25472517 has 16 divisors (see below), whose sum is σ = 39124992. Its totient is φ = 14439600.

The previous prime is 25472509. The next prime is 25472519. The reversal of 25472517 is 71527452.

It is not a de Polignac number, because 25472517 - 2³ = 25472509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25472519) 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, 2109 + ... + 7442.

It is an arithmetic number, because the mean of its divisors is an integer number (2445312).

Almost surely, 2^25472517 is an apocalyptic number.

It is an amenable number.

25472517 is a deficient number, since it is larger than the sum of its proper divisors (13652475).

25472517 is a wasteful number, since it uses less digits than its factorization.

25472517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9688.

The product of its digits is 19600, while the sum is 33.

The square root of 25472517 is about 5047.0305130839. The cubic root of 25472517 is about 294.2324853681.

Adding to 25472517 its reverse (71527452), we get a palindrome (96999969).

It can be divided in two parts, 254 and 72517, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 25472517 in words is "twenty-five million, four hundred seventy-two thousand, five hundred seventeen".