25078579 has 4 divisors (see below), whose sum is σ = 26168976. Its totient is φ = 23988184.

The previous prime is 25078567. The next prime is 25078583. The reversal of 25078579 is 97587052.

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 25078579 - 2¹⁹ = 24554291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25078679) 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, 545164 + ... + 545209.

It is an arithmetic number, because the mean of its divisors is an integer number (6542244).

Almost surely, 2^25078579 is an apocalyptic number.

25078579 is a deficient number, since it is larger than the sum of its proper divisors (1090397).

25078579 is a wasteful number, since it uses less digits than its factorization.

25078579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090396.

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 25078579 is about 5007.8517350257. The cubic root of 25078579 is about 292.7078085926.

The spelling of 25078579 in words is "twenty-five million, seventy-eight thousand, five hundred seventy-nine".