25461289 has 8 divisors (see below), whose sum is σ = 29775680. Its totient is φ = 21316176.

The previous prime is 25461281. The next prime is 25461347. The reversal of 25461289 is 98216452.

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

It is not a de Polignac number, because 25461289 - 2³ = 25461281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25461281) 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, 41994 + ... + 42595.

It is an arithmetic number, because the mean of its divisors is an integer number (3721960).

Almost surely, 2^25461289 is an apocalyptic number.

It is an amenable number.

25461289 is a deficient number, since it is larger than the sum of its proper divisors (4314391).

25461289 is an equidigital number, since it uses as much as digits as its factorization.

25461289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84639.

The product of its digits is 34560, while the sum is 37.

The square root of 25461289 is about 5045.9180532387. The cubic root of 25461289 is about 294.1892475539.

The spelling of 25461289 in words is "twenty-five million, four hundred sixty-one thousand, two hundred eighty-nine".