25361945 has 8 divisors (see below), whose sum is σ = 34782144. Its totient is φ = 17391024.

The previous prime is 25361933. The next prime is 25361969. The reversal of 25361945 is 54916352.

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

It is not a de Polignac number, because 25361945 - 2⁴ = 25361929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 724627 = 25361945 / (2 + 5 + 3 + 6 + 1 + 9 + 4 + 5).

It is a Duffinian number.

It is an unprimeable number.

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, 362279 + ... + 362348.

It is an arithmetic number, because the mean of its divisors is an integer number (4347768).

Almost surely, 2^25361945 is an apocalyptic number.

It is an amenable number.

25361945 is a deficient number, since it is larger than the sum of its proper divisors (9420199).

25361945 is an equidigital number, since it uses as much as digits as its factorization.

25361945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724639.

The product of its digits is 32400, while the sum is 35.

The square root of 25361945 is about 5036.0644356481. The cubic root of 25361945 is about 293.8061296091.

The spelling of 25361945 in words is "twenty-five million, three hundred sixty-one thousand, nine hundred forty-five".