25012205320 has 32 divisors (see below), whose sum is σ = 56316484800. Its totient is φ = 9997944768.

The previous prime is 25012205263. The next prime is 25012205327. The reversal of 25012205320 is 2350221052.

It is a super-2 number, since 2×25012205320² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25012205291 and 25012205300.

It is not an unprimeable number, because it can be changed into a prime (25012205327) 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, 158190 + ... + 273949.

It is an arithmetic number, because the mean of its divisors is an integer number (1759890150).

Almost surely, 2^25012205320 is an apocalyptic number.

25012205320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25012205320 is an abundant number, since it is smaller than the sum of its proper divisors (31304279480).

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

25012205320 is a wasteful number, since it uses less digits than its factorization.

25012205320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433597 (or 433593 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 25012205320 its reverse (2350221052), we get a palindrome (27362426372).

The spelling of 25012205320 in words is "twenty-five billion, twelve million, two hundred five thousand, three hundred twenty".