25493687 has 8 divisors (see below), whose sum is σ = 27701760. Its totient is φ = 23372280.

The previous prime is 25493651. The next prime is 25493707. The reversal of 25493687 is 78639452.

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

It is not a de Polignac number, because 25493687 - 2¹² = 25489591 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 (25493647) 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, 21053 + ... + 22230.

It is an arithmetic number, because the mean of its divisors is an integer number (3462720).

Almost surely, 2^25493687 is an apocalyptic number.

25493687 is a deficient number, since it is larger than the sum of its proper divisors (2208073).

25493687 is a wasteful number, since it uses less digits than its factorization.

25493687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43333.

The product of its digits is 362880, while the sum is 44.

The square root of 25493687 is about 5049.1273503448. The cubic root of 25493687 is about 294.3139741993.

The spelling of 25493687 in words is "twenty-five million, four hundred ninety-three thousand, six hundred eighty-seven".