25420650 has 24 divisors (see below), whose sum is σ = 63043584. Its totient is φ = 6778800.

The previous prime is 25420643. The next prime is 25420657. The reversal of 25420650 is 5602452.

It is an interprime number because it is at equal distance from previous prime (25420643) and next prime (25420657).

It is a self number, because there is not a number n which added to its sum of digits gives 25420650.

It is not an unprimeable number, because it can be changed into a prime (25420657) 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 11 ways as a sum of consecutive naturals, for example, 84586 + ... + 84885.

It is an arithmetic number, because the mean of its divisors is an integer number (2626816).

Almost surely, 2^25420650 is an apocalyptic number.

25420650 is an abundant number, since it is smaller than the sum of its proper divisors (37622934).

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

25420650 is a wasteful number, since it uses less digits than its factorization.

25420650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169486 (or 169481 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 25420650 is about 5041.8895267548. The cubic root of 25420650 is about 294.0326448086.

The spelling of 25420650 in words is "twenty-five million, four hundred twenty thousand, six hundred fifty".