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25057480 = 235789491
BaseRepresentation
bin101111110010…
…1100011001000
31202011001101211
41133211203020
522403314410
62253022504
7422661610
oct137454310
952131354
1025057480
1113165068
128484a34
135264416
143483a40
1522ee68a
hex17e58c8

25057480 has 32 divisors (see below), whose sum is σ = 64434240. Its totient is φ = 8591040.

The previous prime is 25057471. The next prime is 25057553. The reversal of 25057480 is 8475052.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44466 + ... + 45025.

It is an arithmetic number, because the mean of its divisors is an integer number (2013570).

Almost surely, 225057480 is an apocalyptic number.

25057480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25057480 is an abundant number, since it is smaller than the sum of its proper divisors (39376760).

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

25057480 is a wasteful number, since it uses less digits than its factorization.

25057480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89509 (or 89505 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 25057480 is about 5005.7446998424. The cubic root of 25057480 is about 292.6256990121.

The spelling of 25057480 in words is "twenty-five million, fifty-seven thousand, four hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 89491 178982 357964 447455 626437 715928 894910 1252874 1789820 2505748 3132185 3579640 5011496 6264370 12528740 25057480