25810098 has 16 divisors (see below), whose sum is σ = 51671520. Its totient is φ = 8594816.

The previous prime is 25810093. The next prime is 25810121. The reversal of 25810098 is 89001852.

It is a happy number.

It is a super-2 number, since 2×25810098² = 1332322317539208, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25810091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8386 + ... + 11042.

It is an arithmetic number, because the mean of its divisors is an integer number (3229470).

Almost surely, 2^25810098 is an apocalyptic number.

25810098 is an abundant number, since it is smaller than the sum of its proper divisors (25861422).

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

25810098 is a wasteful number, since it uses less digits than its factorization.

25810098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 25810098 is about 5080.3639633396. The cubic root of 25810098 is about 295.5265822211.

The spelling of 25810098 in words is "twenty-five million, eight hundred ten thousand, ninety-eight".