25800996 has 24 divisors (see below), whose sum is σ = 64833664. Its totient is φ = 7938720.

The previous prime is 25800991. The next prime is 25800997. The reversal of 25800996 is 69900852.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (25800991) 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, 82540 + ... + 82851.

Almost surely, 2^25800996 is an apocalyptic number.

25800996 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25800996 is an abundant number, since it is smaller than the sum of its proper divisors (39032668).

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

25800996 is a wasteful number, since it uses less digits than its factorization.

25800996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165411 (or 165409 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 25800996 is about 5079.4680823882. The cubic root of 25800996 is about 295.4918387238.

It can be divided in two parts, 25800 and 996, that added together give a triangular number (26796 = T₂₃₁).

The spelling of 25800996 in words is "twenty-five million, eight hundred thousand, nine hundred ninety-six".