25190661 has 8 divisors (see below), whose sum is σ = 33616480. Its totient is φ = 16779312.

The previous prime is 25190629. The next prime is 25190677. The reversal of 25190661 is 16609152.

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

It is not a de Polignac number, because 25190661 - 2⁵ = 25190629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25190461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1470 + ... + 7248.

It is an arithmetic number, because the mean of its divisors is an integer number (4202060).

Almost surely, 2^25190661 is an apocalyptic number.

It is an amenable number.

25190661 is a deficient number, since it is larger than the sum of its proper divisors (8425819).

25190661 is a wasteful number, since it uses less digits than its factorization.

25190661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7235.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 25190661 is about 5019.0298863426. The cubic root of 25190661 is about 293.1432203324.

The spelling of 25190661 in words is "twenty-five million, one hundred ninety thousand, six hundred sixty-one".