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25412980 = 2251270649
BaseRepresentation
bin110000011110…
…0010101110100
31202211010001111
41200330111310
523001203410
62304404404
7426002215
oct140742564
952733044
1025412980
111338816a
128616704
13535a188
14353740c
15236eb8a
hex183c574

25412980 has 12 divisors (see below), whose sum is σ = 53367300. Its totient is φ = 10165184.

The previous prime is 25412941. The next prime is 25412983. The reversal of 25412980 is 8921452.

It can be written as a sum of positive squares in 2 ways, for example, as 7873636 + 17539344 = 2806^2 + 4188^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25412983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635305 + ... + 635344.

It is an arithmetic number, because the mean of its divisors is an integer number (4447275).

Almost surely, 225412980 is an apocalyptic number.

25412980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25412980 is an abundant number, since it is smaller than the sum of its proper divisors (27954320).

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

25412980 is a wasteful number, since it uses less digits than its factorization.

25412980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270658 (or 1270656 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 25412980 is about 5041.1288418369. The cubic root of 25412980 is about 294.0030696766.

The spelling of 25412980 in words is "twenty-five million, four hundred twelve thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 1270649 2541298 5082596 6353245 12706490 25412980