25201320 has 32 divisors (see below), whose sum is σ = 75604320. Its totient is φ = 6720320.

The previous prime is 25201303. The next prime is 25201321. The reversal of 25201320 is 2310252.

It is a hoax number, since the sum of its digits (15) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 25201320.

It is not an unprimeable number, because it can be changed into a prime (25201321) 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, 104886 + ... + 105125.

It is an arithmetic number, because the mean of its divisors is an integer number (2362635).

Almost surely, 2^25201320 is an apocalyptic number.

25201320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25201320 is an abundant number, since it is smaller than the sum of its proper divisors (50403000).

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

25201320 is a wasteful number, since it uses less digits than its factorization.

25201320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210025 (or 210021 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 25201320 is about 5020.0916326298. The cubic root of 25201320 is about 293.1845606924.

Adding to 25201320 its reverse (2310252), we get a palindrome (27511572).

The spelling of 25201320 in words is "twenty-five million, two hundred one thousand, three hundred twenty".