25673170725 has 120 divisors (see below), whose sum is σ = 49040754048. Its totient is φ = 13270521600.

The previous prime is 25673170717. The next prime is 25673170727. The reversal of 25673170725 is 52707137652.

25673170725 is a `hidden beast` number, since 2 + 567 + 3 + 17 + 0 + 72 + 5 = 666.

It is not a de Polignac number, because 25673170725 - 2³ = 25673170717 is a prime.

It is a super-2 number, since 2×25673170725² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25673170727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 10182465 + ... + 10184985.

Almost surely, 2^25673170725 is an apocalyptic number.

25673170725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25673170725 is a deficient number, since it is larger than the sum of its proper divisors (23367583323).

25673170725 is a wasteful number, since it uses less digits than its factorization.

25673170725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697 (or 2683 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 45.

The spelling of 25673170725 in words is "twenty-five billion, six hundred seventy-three million, one hundred seventy thousand, seven hundred twenty-five".