25049530 has 32 divisors (see below), whose sum is σ = 51331968. Its totient is φ = 8712000.

The previous prime is 25049503. The next prime is 25049537. The reversal of 25049530 is 3594052.

It is not an unprimeable number, because it can be changed into a prime (25049537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2421 + ... + 7480.

It is an arithmetic number, because the mean of its divisors is an integer number (1604124).

Almost surely, 2^25049530 is an apocalyptic number.

25049530 is an abundant number, since it is smaller than the sum of its proper divisors (26282438).

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

25049530 is a wasteful number, since it uses less digits than its factorization.

25049530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9942.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 25049530 is about 5004.9505492063. The cubic root of 25049530 is about 292.5947485682.

The spelling of 25049530 in words is "twenty-five million, forty-nine thousand, five hundred thirty".