Search a number
-
+
25952380 = 2251297619
BaseRepresentation
bin110001100000…
…0000001111100
31210211111222021
41203000001330
523120434010
62324125524
7433406626
oct143000174
953744867
1025952380
1113716453
1288368a4
1354b884c
143637c16
1524298da
hex18c007c

25952380 has 12 divisors (see below), whose sum is σ = 54500040. Its totient is φ = 10380944.

The previous prime is 25952359. The next prime is 25952411. The reversal of 25952380 is 8325952.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648790 + ... + 648829.

It is an arithmetic number, because the mean of its divisors is an integer number (4541670).

Almost surely, 225952380 is an apocalyptic number.

25952380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25952380 is an abundant number, since it is smaller than the sum of its proper divisors (28547660).

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

25952380 is a wasteful number, since it uses less digits than its factorization.

25952380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297628 (or 1297626 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 25952380 is about 5094.3478483512. The cubic root of 25952380 is about 296.0686321253.

It can be divided in two parts, 2 and 5952380, that multiplied together give a triangular number (11904760 = T4879).

The spelling of 25952380 in words is "twenty-five million, nine hundred fifty-two thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 1297619 2595238 5190476 6488095 12976190 25952380