25520803 has 16 divisors (see below), whose sum is σ = 31933440. Its totient is φ = 19814400.

The previous prime is 25520779. The next prime is 25520827. The reversal of 25520803 is 30802552.

It is an interprime number because it is at equal distance from previous prime (25520779) and next prime (25520827).

It is a cyclic number.

It is not a de Polignac number, because 25520803 - 2⁹ = 25520291 is a prime.

It is a super-2 number, since 2×25520803² = 1302622771529618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25520003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32803 + ... + 33571.

It is an arithmetic number, because the mean of its divisors is an integer number (1995840).

Almost surely, 2^25520803 is an apocalyptic number.

25520803 is a deficient number, since it is larger than the sum of its proper divisors (6412637).

25520803 is a wasteful number, since it uses less digits than its factorization.

25520803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 25520803 is about 5051.8118531869. The cubic root of 25520803 is about 294.4182848587.

The spelling of 25520803 in words is "twenty-five million, five hundred twenty thousand, eight hundred three".