25978755 has 32 divisors (see below), whose sum is σ = 45941760. Its totient is φ = 12430080.

The previous prime is 25978727. The next prime is 25978759. The reversal of 25978755 is 55787952.

It is not a de Polignac number, because 25978755 - 2⁷ = 25978627 is a prime.

It is a super-2 number, since 2×25978755² = 1349791422700050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (25978759) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12039 + ... + 14031.

It is an arithmetic number, because the mean of its divisors is an integer number (1435680).

Almost surely, 2^25978755 is an apocalyptic number.

25978755 is a deficient number, since it is larger than the sum of its proper divisors (19963005).

25978755 is a wasteful number, since it uses less digits than its factorization.

25978755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091.

The product of its digits is 882000, while the sum is 48.

The square root of 25978755 is about 5096.9358442107. The cubic root of 25978755 is about 296.1688948159.

The spelling of 25978755 in words is "twenty-five million, nine hundred seventy-eight thousand, seven hundred fifty-five".