25257130 has 16 divisors (see below), whose sum is σ = 45599400. Its totient is φ = 10072512.

The previous prime is 25257119. The next prime is 25257131. The reversal of 25257130 is 3175252.

It can be written as a sum of positive squares in 4 ways, for example, as 23590449 + 1666681 = 4857^2 + 1291^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25257095 and 25257104.

It is not an unprimeable number, because it can be changed into a prime (25257131) 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, 129 + ... + 7108.

Almost surely, 2^25257130 is an apocalyptic number.

25257130 is a deficient number, since it is larger than the sum of its proper divisors (20342270).

25257130 is a wasteful number, since it uses less digits than its factorization.

25257130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7593.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 25257130 is about 5025.6472220004. The cubic root of 25257130 is about 293.4008266983.

The spelling of 25257130 in words is "twenty-five million, two hundred fifty-seven thousand, one hundred thirty".