25485018 has 32 divisors (see below), whose sum is σ = 55095936. Its totient is φ = 7812288.

The previous prime is 25485017. The next prime is 25485029. The reversal of 25485018 is 81058452.

It is a super-2 number, since 2×25485018² = 1298972284920648, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25485018.

It is not an unprimeable number, because it can be changed into a prime (25485011) 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, 30555 + ... + 31377.

It is an arithmetic number, because the mean of its divisors is an integer number (1721748).

Almost surely, 2^25485018 is an apocalyptic number.

25485018 is an abundant number, since it is smaller than the sum of its proper divisors (29610918).

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

25485018 is a wasteful number, since it uses less digits than its factorization.

25485018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 25485018 is about 5048.2688121771. The cubic root of 25485018 is about 294.2806104219.

The spelling of 25485018 in words is "twenty-five million, four hundred eighty-five thousand, eighteen".