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25135230 = 2351974253
BaseRepresentation
bin101111111100…
…0100001111110
31202022000001110
41133320201332
522413311410
62254422450
7423434361
oct137704176
952260043
1025135230
111320851a
128501a26
135290923
1434a40d8
152317720
hex17f887e

25135230 has 32 divisors (see below), whose sum is σ = 60645024. Its totient is φ = 6667136.

The previous prime is 25135213. The next prime is 25135237. The reversal of 25135230 is 3253152.

It is a junction number, because it is equal to n+sod(n) for n = 25135197 and 25135206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25135237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3784 + ... + 8036.

It is an arithmetic number, because the mean of its divisors is an integer number (1895157).

Almost surely, 225135230 is an apocalyptic number.

25135230 is an abundant number, since it is smaller than the sum of its proper divisors (35509794).

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

25135230 is a wasteful number, since it uses less digits than its factorization.

25135230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4460.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 25135230 is about 5013.5047621400. The cubic root of 25135230 is about 292.9280459468.

Adding to 25135230 its reverse (3253152), we get a palindrome (28388382).

The spelling of 25135230 in words is "twenty-five million, one hundred thirty-five thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 197 394 591 985 1182 1970 2955 4253 5910 8506 12759 21265 25518 42530 63795 127590 837841 1675682 2513523 4189205 5027046 8378410 12567615 25135230