25215064 has 32 divisors (see below), whose sum is σ = 54335520. Its totient is φ = 10745856.

The previous prime is 25215049. The next prime is 25215067. The reversal of 25215064 is 46051252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25215067) 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 7 ways as a sum of consecutive naturals, for example, 9642 + ... + 11974.

It is an arithmetic number, because the mean of its divisors is an integer number (1697985).

Almost surely, 2^25215064 is an apocalyptic number.

It is an amenable number.

25215064 is an abundant number, since it is smaller than the sum of its proper divisors (29120456).

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

25215064 is a wasteful number, since it uses less digits than its factorization.

25215064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539 (or 2535 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 25215064 is about 5021.4603453577. The cubic root of 25215064 is about 293.2378488574.

The spelling of 25215064 in words is "twenty-five million, two hundred fifteen thousand, sixty-four".