25506798 has 16 divisors (see below), whose sum is σ = 51068880. Its totient is φ = 8493056.

The previous prime is 25506781. The next prime is 25506823. The reversal of 25506798 is 89760552.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5998 + ... + 9326.

It is an arithmetic number, because the mean of its divisors is an integer number (3191805).

Almost surely, 2^25506798 is an apocalyptic number.

25506798 is an abundant number, since it is smaller than the sum of its proper divisors (25562082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25506798 is a wasteful number, since it uses less digits than its factorization.

25506798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4611.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 25506798 is about 5050.4255266264. The cubic root of 25506798 is about 294.3644192265.

The spelling of 25506798 in words is "twenty-five million, five hundred six thousand, seven hundred ninety-eight".