25461691 has 12 divisors (see below), whose sum is σ = 27075384. Its totient is φ = 23940000.

The previous prime is 25461679. The next prime is 25461701. The reversal of 25461691 is 19616452.

It is not a de Polignac number, because 25461691 - 2¹³ = 25453499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25461671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90471 + ... + 90751.

It is an arithmetic number, because the mean of its divisors is an integer number (2256282).

Almost surely, 2^25461691 is an apocalyptic number.

25461691 is a deficient number, since it is larger than the sum of its proper divisors (1613693).

25461691 is a wasteful number, since it uses less digits than its factorization.

25461691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 551 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 25461691 is about 5045.9578872599. The cubic root of 25461691 is about 294.1907958318.

The spelling of 25461691 in words is "twenty-five million, four hundred sixty-one thousand, six hundred ninety-one".