25694740 has 12 divisors (see below), whose sum is σ = 53958996. Its totient is φ = 10277888.

The previous prime is 25694737. The next prime is 25694743. The reversal of 25694740 is 4749652.

It is an interprime number because it is at equal distance from previous prime (25694737) and next prime (25694743).

It can be written as a sum of positive squares in 2 ways, for example, as 14485636 + 11209104 = 3806^2 + 3348^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25694740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25694743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642349 + ... + 642388.

It is an arithmetic number, because the mean of its divisors is an integer number (4496583).

Almost surely, 2^25694740 is an apocalyptic number.

25694740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25694740 is an abundant number, since it is smaller than the sum of its proper divisors (28264256).

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

25694740 is a wasteful number, since it uses less digits than its factorization.

25694740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284746 (or 1284744 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 25694740 is about 5068.9979285851. The cubic root of 25694740 is about 295.0856401745.

The spelling of 25694740 in words is "twenty-five million, six hundred ninety-four thousand, seven hundred forty".