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25972230 = 235865741
BaseRepresentation
bin110001100010…
…0111000000110
31210212112012110
41203010320012
523122102410
62324401450
7433521534
oct143047006
953775173
1025972230
111372a359
128846286
1354c48ab
143641154
152430720
hex18c4e06

25972230 has 16 divisors (see below), whose sum is σ = 62333424. Its totient is φ = 6925920.

The previous prime is 25972211. The next prime is 25972237. The reversal of 25972230 is 3227952.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 865741 = 25972230 / (2 + 5 + 9 + 7 + 2 + 2 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25972237) 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, 432841 + ... + 432900.

It is an arithmetic number, because the mean of its divisors is an integer number (3895839).

Almost surely, 225972230 is an apocalyptic number.

25972230 is an abundant number, since it is smaller than the sum of its proper divisors (36361194).

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

25972230 is a wasteful number, since it uses less digits than its factorization.

25972230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865751.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 25972230 is about 5096.2957135551. The cubic root of 25972230 is about 296.1440968114.

The spelling of 25972230 in words is "twenty-five million, nine hundred seventy-two thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 865741 1731482 2597223 4328705 5194446 8657410 12986115 25972230