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25023025 = 521000921
BaseRepresentation
bin101111101110…
…1001000110001
31202002022010201
41133131020301
522401214100
62252155201
7422456266
oct137351061
952068121
1025023025
1113141195
128468b01
135251831
14347526d
1522e436a
hex17dd231

25023025 has 6 divisors (see below), whose sum is σ = 31028582. Its totient is φ = 20018400.

The previous prime is 25023023. The next prime is 25023067. The reversal of 25023025 is 52032052.

It can be written as a sum of positive squares in 3 ways, for example, as 3381921 + 21641104 = 1839^2 + 4652^2 .

It is not a de Polignac number, because 25023025 - 21 = 25023023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25022993 and 25023011.

It is not an unprimeable number, because it can be changed into a prime (25023023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 500436 + ... + 500485.

Almost surely, 225023025 is an apocalyptic number.

25023025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25023025 is a deficient number, since it is larger than the sum of its proper divisors (6005557).

25023025 is a wasteful number, since it uses less digits than its factorization.

25023025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000931 (or 1000926 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 25023025 is about 5002.3019700934. The cubic root of 25023025 is about 292.4915136214.

Adding to 25023025 its reverse (52032052), we get a palindrome (77055077).

The spelling of 25023025 in words is "twenty-five million, twenty-three thousand, twenty-five".

Divisors: 1 5 25 1000921 5004605 25023025