25146320 has 20 divisors (see below), whose sum is σ = 58465380. Its totient is φ = 10058496.

The previous prime is 25146313. The next prime is 25146323. The reversal of 25146320 is 2364152.

It can be written as a sum of positive squares in 2 ways, for example, as 19114384 + 6031936 = 4372^2 + 2456^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25146323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157085 + ... + 157244.

It is an arithmetic number, because the mean of its divisors is an integer number (2923269).

Almost surely, 2^25146320 is an apocalyptic number.

25146320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25146320 is an abundant number, since it is smaller than the sum of its proper divisors (33319060).

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

25146320 is a wasteful number, since it uses less digits than its factorization.

25146320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314342 (or 314336 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 25146320 is about 5014.6106528822. The cubic root of 25146320 is about 292.9711208709.

The spelling of 25146320 in words is "twenty-five million, one hundred forty-six thousand, three hundred twenty".