25212130 has 16 divisors (see below), whose sum is σ = 46489464. Its totient is φ = 9838720.

The previous prime is 25212113. The next prime is 25212137. The reversal of 25212130 is 3121252.

It can be written as a sum of positive squares in 4 ways, for example, as 20602521 + 4609609 = 4539^2 + 2147^2 .

It is not an unprimeable number, because it can be changed into a prime (25212137) 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, 30337 + ... + 31156.

Almost surely, 2^25212130 is an apocalyptic number.

25212130 is a deficient number, since it is larger than the sum of its proper divisors (21277334).

25212130 is a wasteful number, since it uses less digits than its factorization.

25212130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61541.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 25212130 is about 5021.1681907700. The cubic root of 25212130 is about 293.2264747939.

Adding to 25212130 its reverse (3121252), we get a palindrome (28333382).

The spelling of 25212130 in words is "twenty-five million, two hundred twelve thousand, one hundred thirty".