25302138 has 16 divisors (see below), whose sum is σ = 52237056. Its totient is φ = 8161920.

The previous prime is 25302131. The next prime is 25302143. The reversal of 25302138 is 83120352.

It is not an unprimeable number, because it can be changed into a prime (25302131) 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, 67831 + ... + 68202.

It is an arithmetic number, because the mean of its divisors is an integer number (3264816).

Almost surely, 2^25302138 is an apocalyptic number.

25302138 is an abundant number, since it is smaller than the sum of its proper divisors (26934918).

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

25302138 is a wasteful number, since it uses less digits than its factorization.

25302138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136069.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 25302138 is about 5030.1230601249. The cubic root of 25302138 is about 293.5750025739.

The spelling of 25302138 in words is "twenty-five million, three hundred two thousand, one hundred thirty-eight".