25949121 has 8 divisors (see below), whose sum is σ = 37744224. Its totient is φ = 15726720.

The previous prime is 25949101. The next prime is 25949141. The reversal of 25949121 is 12194952.

It is an interprime number because it is at equal distance from previous prime (25949101) and next prime (25949141).

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

It is not a de Polignac number, because 25949121 - 2⁹ = 25948609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 786337 = 25949121 / (2 + 5 + 9 + 4 + 9 + 1 + 2 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25949101) 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, 393136 + ... + 393201.

It is an arithmetic number, because the mean of its divisors is an integer number (4718028).

Almost surely, 2^25949121 is an apocalyptic number.

It is an amenable number.

25949121 is a deficient number, since it is larger than the sum of its proper divisors (11795103).

25949121 is a wasteful number, since it uses less digits than its factorization.

25949121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786351.

The product of its digits is 6480, while the sum is 33.

The square root of 25949121 is about 5094.0279740104. The cubic root of 25949121 is about 296.0562385534.

The spelling of 25949121 in words is "twenty-five million, nine hundred forty-nine thousand, one hundred twenty-one".