25085261 has 8 divisors (see below), whose sum is σ = 26006400. Its totient is φ = 24167920.

The previous prime is 25085257. The next prime is 25085279. The reversal of 25085261 is 16258052.

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

It is a cyclic number.

It is not a de Polignac number, because 25085261 - 2² = 25085257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25085861) 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, 23816 + ... + 24846.

It is an arithmetic number, because the mean of its divisors is an integer number (3250800).

Almost surely, 2^25085261 is an apocalyptic number.

It is an amenable number.

25085261 is a deficient number, since it is larger than the sum of its proper divisors (921139).

25085261 is a wasteful number, since it uses less digits than its factorization.

25085261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 25085261 is about 5008.5188429315. The cubic root of 25085261 is about 292.7338028870.

The spelling of 25085261 in words is "twenty-five million, eighty-five thousand, two hundred sixty-one".