25740499 has 4 divisors (see below), whose sum is σ = 27254664. Its totient is φ = 24226336.

The previous prime is 25740469. The next prime is 25740503. The reversal of 25740499 is 99404752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25740499 - 2⁵ = 25740467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25740439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757057 + ... + 757090.

It is an arithmetic number, because the mean of its divisors is an integer number (6813666).

Almost surely, 2^25740499 is an apocalyptic number.

25740499 is a deficient number, since it is larger than the sum of its proper divisors (1514165).

25740499 is a wasteful number, since it uses less digits than its factorization.

25740499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514164.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 25740499 is about 5073.5095348289. The cubic root of 25740499 is about 295.2607060458.

The spelling of 25740499 in words is "twenty-five million, seven hundred forty thousand, four hundred ninety-nine".