25725018 has 16 divisors (see below), whose sum is σ = 56127456. Its totient is φ = 7795440.

The previous prime is 25725013. The next prime is 25725019. The reversal of 25725018 is 81052752.

It is a super-2 number, since 2×25725018² = 1323553102200648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25725013) 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, 194821 + ... + 194952.

It is an arithmetic number, because the mean of its divisors is an integer number (3507966).

Almost surely, 2^25725018 is an apocalyptic number.

25725018 is an abundant number, since it is smaller than the sum of its proper divisors (30402438).

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

25725018 is a wasteful number, since it uses less digits than its factorization.

25725018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389789.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 25725018 is about 5071.9836356203. The cubic root of 25725018 is about 295.2015017072.

The spelling of 25725018 in words is "twenty-five million, seven hundred twenty-five thousand, eighteen".