25240779 has 6 divisors (see below), whose sum is σ = 36458916. Its totient is φ = 16827180.

The previous prime is 25240777. The next prime is 25240783. The reversal of 25240779 is 97704252.

It is not a de Polignac number, because 25240779 - 2¹ = 25240777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25240777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1402257 + ... + 1402274.

It is an arithmetic number, because the mean of its divisors is an integer number (6076486).

Almost surely, 2^25240779 is an apocalyptic number.

25240779 is a deficient number, since it is larger than the sum of its proper divisors (11218137).

25240779 is a wasteful number, since it uses less digits than its factorization.

25240779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804537 (or 2804534 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 25240779 is about 5024.0202029849. The cubic root of 25240779 is about 293.3374989365.

The spelling of 25240779 in words is "twenty-five million, two hundred forty thousand, seven hundred seventy-nine".