25720078 has 8 divisors (see below), whose sum is σ = 38615472. Its totient is φ = 12848256.

The previous prime is 25720073. The next prime is 25720087. The reversal of 25720078 is 87002752.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25720073) 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, 2850 + ... + 7717.

It is an arithmetic number, because the mean of its divisors is an integer number (4826934).

Almost surely, 2^25720078 is an apocalyptic number.

25720078 is a deficient number, since it is larger than the sum of its proper divisors (12895394).

25720078 is a wasteful number, since it uses less digits than its factorization.

25720078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11786.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 25720078 is about 5071.4966232859. The cubic root of 25720078 is about 295.1826045546.

The spelling of 25720078 in words is "twenty-five million, seven hundred twenty thousand, seventy-eight".