25002805530 has 32 divisors (see below), whose sum is σ = 60600866688. Its totient is φ = 6601400000.

The previous prime is 25002805493. The next prime is 25002805559. The reversal of 25002805530 is 3550820052.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4122846 + ... + 4128905.

It is an arithmetic number, because the mean of its divisors is an integer number (1893777084).

Almost surely, 2^25002805530 is an apocalyptic number.

25002805530 is an abundant number, since it is smaller than the sum of its proper divisors (35598061158).

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

25002805530 is a wasteful number, since it uses less digits than its factorization.

25002805530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8251862.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 25002805530 in words is "twenty-five billion, two million, eight hundred five thousand, five hundred thirty".