25172355 has 16 divisors (see below), whose sum is σ = 43374240. Its totient is φ = 12392448.

The previous prime is 25172353. The next prime is 25172363. The reversal of 25172355 is 55327152.

It is not a de Polignac number, because 25172355 - 2¹ = 25172353 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (25172353) 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, 64350 + ... + 64739.

It is an arithmetic number, because the mean of its divisors is an integer number (2710890).

Almost surely, 2^25172355 is an apocalyptic number.

25172355 is a deficient number, since it is larger than the sum of its proper divisors (18201885).

25172355 is a wasteful number, since it uses less digits than its factorization.

25172355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129110.

The product of its digits is 10500, while the sum is 30.

The square root of 25172355 is about 5017.2058957153. The cubic root of 25172355 is about 293.0721942724.

The spelling of 25172355 in words is "twenty-five million, one hundred seventy-two thousand, three hundred fifty-five".