25670500 has 24 divisors (see below), whose sum is σ = 56065464. Its totient is φ = 10268000.

The previous prime is 25670483. The next prime is 25670503. The reversal of 25670500 is 507652.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 46656 + 25623844 = 216^2 + 5062^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (25670503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25171 + ... + 26170.

It is an arithmetic number, because the mean of its divisors is an integer number (2336061).

Almost surely, 2^25670500 is an apocalyptic number.

25670500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25670500 is an abundant number, since it is smaller than the sum of its proper divisors (30394964).

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

25670500 is a wasteful number, since it uses less digits than its factorization.

25670500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51360 (or 51348 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 25670500 is about 5066.6063592902. The cubic root of 25670500 is about 294.9928179809.

It can be divided in two parts, 256 and 70500, that added together give a square (70756 = 266²).

The spelling of 25670500 in words is "twenty-five million, six hundred seventy thousand, five hundred".