25040769 has 8 divisors (see below), whose sum is σ = 35956032. Its totient is φ = 15409680.

The previous prime is 25040759. The next prime is 25040789. The reversal of 25040769 is 96704052.

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

It is not a de Polignac number, because 25040769 - 2⁵ = 25040737 is a prime.

It is a super-2 number, since 2×25040769² = 1254080224222722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25040759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320997 + ... + 321074.

It is an arithmetic number, because the mean of its divisors is an integer number (4494504).

Almost surely, 2^25040769 is an apocalyptic number.

It is an amenable number.

25040769 is a deficient number, since it is larger than the sum of its proper divisors (10915263).

25040769 is a wasteful number, since it uses less digits than its factorization.

25040769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642087.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 25040769 is about 5004.0752392425. The cubic root of 25040769 is about 292.5606332043.

The spelling of 25040769 in words is "twenty-five million, forty thousand, seven hundred sixty-nine".