25140493 has 4 divisors (see below), whose sum is σ = 28732000. Its totient is φ = 21548988.

The previous prime is 25140491. The next prime is 25140499. The reversal of 25140493 is 39404152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25140493 - 2¹ = 25140491 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 (25140491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1795743 + ... + 1795756.

It is an arithmetic number, because the mean of its divisors is an integer number (7183000).

Almost surely, 2^25140493 is an apocalyptic number.

It is an amenable number.

25140493 is a deficient number, since it is larger than the sum of its proper divisors (3591507).

25140493 is an equidigital number, since it uses as much as digits as its factorization.

25140493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3591506.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 25140493 is about 5014.0296169847. The cubic root of 25140493 is about 292.9484896655.

The spelling of 25140493 in words is "twenty-five million, one hundred forty thousand, four hundred ninety-three".