Search a number
-
+
25000000004 = 227892857143
BaseRepresentation
bin10111010010000111…
…011011101000000100
32101112021220120211002
4113102013123220010
5402200000000004
615252420432432
71543344331250
oct272207335004
971467816732
1025000000004
11a669937031
124a18548718
132485536515
1412d2387260
159b4bc261e
hex5d21dba04

25000000004 has 12 divisors (see below), whose sum is σ = 50000000064. Its totient is φ = 10714285704.

The previous prime is 24999999991. The next prime is 25000000013. The reversal of 25000000004 is 40000000052.

It is a sliding number, since 25000000004 = 4 + 25000000000 and 1/4 + 1/25000000000 = 0.25000000004.

25000000004 is an admirable 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, 446428544 + ... + 446428599.

It is an arithmetic number, because the mean of its divisors is an integer number (4166666672).

Almost surely, 225000000004 is an apocalyptic number.

It is an amenable number.

25000000004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25000000004 is a wasteful number, since it uses less digits than its factorization.

25000000004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892857154 (or 892857152 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

Adding to 25000000004 its reverse (40000000052), we get a palindrome (65000000056).

It can be divided in two parts, 2500000000 and 4, that multiplied together give a 10-th power (10000000000 = 1010).

The spelling of 25000000004 in words is "twenty-five billion, four", and thus it is an aban number.

Divisors: 1 2 4 7 14 28 892857143 1785714286 3571428572 6250000001 12500000002 25000000004