25601955 has 8 divisors (see below), whose sum is σ = 40963152. Its totient is φ = 13654368.

The previous prime is 25601951. The next prime is 25601957. The reversal of 25601955 is 55910652.

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

It is not a de Polignac number, because 25601955 - 2² = 25601951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25601951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 853384 + ... + 853413.

It is an arithmetic number, because the mean of its divisors is an integer number (5120394).

Almost surely, 2^25601955 is an apocalyptic number.

25601955 is a deficient number, since it is larger than the sum of its proper divisors (15361197).

25601955 is a wasteful number, since it uses less digits than its factorization.

25601955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706805.

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 25601955 is about 5059.8374479819. The cubic root of 25601955 is about 294.7300220769.

The spelling of 25601955 in words is "twenty-five million, six hundred one thousand, nine hundred fifty-five".