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25268831 = 729124477
BaseRepresentation
bin110000001100…
…1001001011111
31202112210022122
41200121021133
522432100311
62301333155
7424532030
oct140311137
952483278
1025268831
1113299935
1285671bb
135309693
1434daa87
1523420db
hex181925f

25268831 has 8 divisors (see below), whose sum is σ = 29874720. Its totient is φ = 20911968.

The previous prime is 25268827. The next prime is 25268839. The reversal of 25268831 is 13886252.

25268831 = T394 + T395 + ... + T596.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25268831 - 22 = 25268827 is a prime.

It is a super-2 number, since 2×252688312 = 1277027640213122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25268791 and 25268800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25268839) 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, 62036 + ... + 62441.

It is an arithmetic number, because the mean of its divisors is an integer number (3734340).

Almost surely, 225268831 is an apocalyptic number.

25268831 is a deficient number, since it is larger than the sum of its proper divisors (4605889).

25268831 is a wasteful number, since it uses less digits than its factorization.

25268831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124513.

The product of its digits is 23040, while the sum is 35.

The square root of 25268831 is about 5026.8112158704. The cubic root of 25268831 is about 293.4461281380.

The spelling of 25268831 in words is "twenty-five million, two hundred sixty-eight thousand, eight hundred thirty-one".

Divisors: 1 7 29 203 124477 871339 3609833 25268831